Big Butt Baby Pants Sewing Pattern!


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The Big Butt Baby Pants Sewing Pattern is a digital PDF sewing pattern for baby girls or boys.  The pants feature a rear panel that adds plenty of room for diapered babies.  They are designed to fit over cloth diapers but work great over disposable diapers too. The options are endless; you can add ruffles, pockets, fold-over cuffs or shorten them into bloomers, capris or shorts.  Instructions include directions for ruffled rear panel and fold-over cuff. With so many possibilities for variation, this is the only baby pants pattern you will ever need!


0-3 months / 3-6 months / 6-12 months / 12-18 months / 18-24 months / 2T

Detailed step-by-step instructions for basic pant
Additional instructions for fold-over cuff and ruffled rear panel
Full color diagrams and photos illustrating each step
Complete set of full-sized pattern pieces in six sizes (attach together before cutting)
Suggestions on how to get the right fit for babies of all sizes/diaper types
Hints on how to adjust the pants as your baby grows

basic pant
with fold-over cuff (shown folded at top of page)
perfect for boys!
 with ruffled rear panel

Please note: You can make shorts by cutting the leg portion of the pant roughly halfway between the cuff and crotch and hemming them to the desired length.  See how to make the pockets in this post. Instructions for shorts/pockets are not included in PDF.


  • 3/4 yard woven fabric such as quilting cotton, linen, flannel, corduroy, lawn, twill (2/3 yard needed for 6-12 months, 1/2 yard needed for 0-3 and 3-6 month sizes)
  • 1/2″ elastic for waistband
  • marking pen
  • safety pin or bodkin for threading elastic
  • (Optional) 1/4 yard of contrasting fabric for rear panel and cuff

Remember to prewash your fabric!

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Big Butt Baby Pants were also featured on the following posts:
Hope you don’t mind if I babble
Coming Soon
Best in Show
Bunny Ruffle Capris
Gifts for Little Boys
Big Butt Baby Pants Trickiness (A post on how to fix puckering on the pants)

And see what others have made in the Big Butt Baby Pants Flickr Pool (submit your pictures here!)


A huge thank you to all of my pattern testers (Karen, Beth, Carolina, Selina, Cerise, Becky and Summer) for helping me try these out and for your fantastic suggestions.

ERRATA: Big Butt Baby Pants Trickinesss  (check out this post to see how to fix puckering at the bottom of the rear panel)
TAKE A LOOK:  Big Butt Baby Pants Flickr Pool (submit your pictures here!)

73 thoughts on “Big Butt Baby Pants Sewing Pattern!

  1. I'm the first to see/comment? Looks like your gonna sell a bundle of these! It's so fun to watch you develop your designs.

  2. I can't wait to buy these!! Like you said, with all the options to modify, it is really worth the $10. And I am excited to have pants that are made to fit a fluffy cloth bottom!

  3. Look at how fancy and profesh that pattern looks! Good job! If I had a tot I'd sure be buying this one 🙂

  4. I am so excited. I do cloth about 50% of the time. Also I just love the look of the contrasting panels and hem. Thanks!

  5. YES! I just bought it and I am super excited! No kids of my own, but many little ones around to gift with sock monkey print pants. Thank you!

  6. Congratulations rae! All that hard work will definitely pay off! I'm about to buy them now!

    SO EXCITED ((i did think this day was a Long, long way away, and here it is, RIGHT HERE, RIGHT NOW!))

  7. My baby (okay he just turned 2 and everyone tells me he's not a baby anymore but) has one of the biggest booties EVER. I so wanted to cloth diaper. I have massive stacks of them. I tried so many styles but there was ALWAYS one problem.

    My poor child waddled. He looked horrible. To top it all off, I would then try to put him in pants and let's just say the image was not the least cute.

    So I gave up.

    Your pants would have helped so much.

  8. I can't wait to try these out on my big butt cloth diapered baby! Thanks so much for all your hard work – I'm hesitating over shirking my packing responsibilities for this weekend's trip to make these pants….argh!

  9. Lovely! Just bought it and printed it! Can't wait to see these finished on my little guy! Thank you so much!

  10. Hi Rae!
    I just got the pattern. My husband bought it and sent it to me. 🙂 I'm super-uber excited to get started. When you have a moment, please check out my blog. Tomorrow (Friday) I'm posting some baby pants I made using a japanese pattern using stretch knit.

    Anyways… LOVE your blog. LOVE the pattern!

    Thank you!

  11. Rae, I have been waiting for this!! Yay! We have a little boy coming December, and I need to get going on making some baby clothes! Thanks a thousand times over.

  12. I get all hivey at the thought of how much work you put into such awesome patterns. And way to represent the Clothies of the world!

  13. Aw heck, only up to 2T? I've got North America's largest 19 month old, 33 lbs and wearing 3 and 4T now, but that's partially to fit cheap pants over his (also cheap–sense a trend here?) cloth diapers. Any idea how big your 2T is? We'll be out of diapers soon, but I'm just afraid he's already past your largest size…

    kathleenpoling (at) yahoo (dot) com

  14. Just bought it! So excited. Need a great pattern for my little guy – there are so many cute girl things and finally something that can be customized for boys! Thanks! :]

  15. I have a questin for you about your pattern development, if you dont mind. What is the process you use? how many items do you make in each size? do you have any tips on calculating sizes, for children or adult clothing?
    I would love any advise you're willing to share!
    I'm selling one of my patterns in my shop:
    Thanks so much!

  16. Just wanted to say how excited I am that this is finally out!! I'd been waiting on pins and needles for you to post it and hoping it would be before September, when my new little guy is due. 🙂 I bought it immediately and have already made 3 pairs, with a fourth soon to be finished. Thanks so much for all the work you put into this. I'm loving the detailed instructions and the variations possible. Yay!

  17. Like you have nothing else to do – HA! I made some of these darling pants, now I'm waiting for the Flickr group to post them! hehehe Thanks for making such a great pattern. I am blogging about them today on my blog.

  18. Those have to be some of the cutest baby pants I have seen. Can't wait to make some for my granddaughter; she will love them.

  19. Love your blog! I have an 18 yr old special needs nephew who wears a diaper. My sister has a hard time finding pants that fit over the diaper but then don't look like he is wearing pants 3 sizes too big.

    Do you think this pattern would work with an adult pants pattern with some adjustments? If so, would it be easy?


  20. Hi Dawn! Sorry I don't have any way to contact you besides the comments so hopefully you will get this.

    I honestly have no idea if your sister would be able to size this pattern up that large. It would really depend on what her skills were for grading patterns…having never tried to make it that large before I really don't know what to tell you.

    Like any pattern, it can be enlarged, but making it for a teenager would mean increasing the leg length more than the proportion of the hip/waist/rise. You would have to take measurements from pants that do fit and size up these dimensions accordingly.

    You could certainly give it a try if you're up for it…sorry I'm not more help on this. Good luck!

  21. Thanks for answering me back. My sister doesn't sew so it would be up to me and I am not sure if I am up for it. I was thinking about buying a pair of pants that would normally fit him without a diaper, taking out the back seam and putting in that insert.

    I guess I will just have to play with it when I get up my nerve.

    Thanks again

  22. I bought your BBBP pattern last week, my little man is now the prod wearer of one pair of BBBPs and two pairs of BBB Dungarees! I'm just adding some photos to Flickr…Thank you so much for a fab pattern!

  23. Yay! I'm so excited! I just bought your pattern and printed it out. I'm so hoping for a quick and easy pattern to be able to make pants for both of my pumpkins!

  24. Silly sewing newbie question but when you cut two of the main pattern piece do you turn it upside down (face down) for one of them?

  25. Hi Annie!

    That's not a silly question at all. In fact since I've now gotten it from three people since the pattern came out I'm thinking I'd better make that clearer in the instructions.

    Yes, when you cut your pants out your fabric should be folded in half, so that the two pant legs are mirror image from eachother. Then you can set the butt panel on the fold and cut just one of those.

    Hope that helps!!


  26. These are wonderful ~ what a great pattern! I just made a lined pair as I thought quilting cotton would still be a bit cool on its own, and now I am working on a version made from a pair of papa's old cords. Thanks for a well thought out pattern for cloth bums! I put a post up with some pics, if you have the time…

  27. Great pattern!

    I made the mistake of cutting out two of the same main panel because from the fabric in the photo it looks like they are the same and no instructions to have a mirror image one. One suggestion is to have fabric with white backside and pattern on front so photo is clearer 🙂

    • I agree with this suggestion. I also cut two that were the same, not mirrored, because the pattern didn’t indicate otherwise and the photo looked as though both were cut on the right side. I have used other patterns where “cut two” means cut two THE SAME, not cut two that are oppostite.

      I think the pattern should indicate cutting two in a mirror image, and the photo should be updated.

      Despite a second trip to the fabric store, the results were quick and impressive. I am a crafter, not a seamstress and the pants were otherwise simple to construct.

      • Yes, this does happen from time to time, and could definitely be improved in the next pattern update! 🙂

        About six months ago we added an errata note in the download email and link page to make sure everyone knows to cut two mirror images, but not everyone catches it of course. We’ll be sure to include that in future revisions.


  28. I love these pants Rae. I purchased the pattern off you a while back and have made heaps of pairs for my baby girl. I will post any that I make on my blog. I would love you to check it out as I am promoting your site but so far I don’t have any followers. I would love you to be added to my followers. Thanks for a great read and awesome patterns. Regard, Sherry

    • Hi BoCo: The Big Butt Baby Pant pattern is pretty easy. I’ve labeled l it as a “Advanced Beginner” level as the rear panel has some curved seams that are a little tricky if it’s the first thing you ever sew, I’d recommend sewing a few other things first. The best way to learn is to practice. Try my (free) newborn pant pattern or the Buttercup Bag pattern for practice with curved seams before you buy it. Hope that helps!

  29. I love this pattern! I really want to buy it soon, but I have about 10 patterns I want to buy at the moment, so I decided to draft up somethin on a whim…let’s just say they turned out okay, but I will be trying out your pattern SOON! Just letting you know, I did link back to your blog for others to use this pattern! You have such an awesome site! I’m just a nobody little crafter, but you are so inspiring! Thanks for all you do!

    • Hi widya:
      Please email me directly; I’ll need more information from you to be able to help. The “contact” button at the top of this page has my email address. Thanks!

  30. Love love love!! Thank you so much for this great, simple pattern! I whipped up a pair last night in thick purple corduroy with the contrasting cuffs in light blue thin corduroy with big purple dots (sorry not a flickr member so won’t post a photo of them). Cutest pants ever!! Perfect sizing (although used the next size up for my lanky gal), and I love the room in the butt – perfect for her MCNs.

  31. Hi Rae, I bought the pattern two days ago and am sewing as we speak. Question: am sewing rears seams (main panels to rear panel) but I have trouble sewing the second main to the rear panel as the sides don’t match. I cut 2 same main panels, but only 1 matches the rear edge. If I sew the other to the rear, the fabric of the second leg will be inside out. I’m a mess!
    Please somebody help me stay sane! 😉

  32. I just made my very first pair of pants for my little boy and hope to make a lot more. A great pattern like yours would help a lot!

  33. Great pattern, have made four pairs so far for grandchildren, the 12-18 months size.

    I thought the legs looked a little wide, so I tapered in the cutting line at the crotch seam down to the bottom edge of the leg. I did *not* alter the size of the crotch seam, just made the legs narrower at the bottom.

    The last pair I made in denim, and added a pocket smack dab in the middle of the back gusset. Photo in the Flickr album.

  34. Have you noticed that in some of your “big butt” pants pictures, the pants are put together wrong? If you notice the ones that have a “large” U shaped crotch….they have used the legs at the waistband and the waist has become the legs. It causes a strange “U” shape between the legs and the legs become shorter and the crotch to waist is longer. Just look at them and see what I mean!!!!

  35. This pattern is so fab, thank you. I’ve only made one pair of pants thus far, but I have many more planned. SO much fun!

    • Hi Anne,

      This generally works best with wovens; if you have a pretty un-stretchy/stable knit, thick knit, or fleece, it may work OK, but there’s so much ease built into this pattern that I don’t think knits are really the best way to go.

  36. Thanks for the fantastic pattern! I just cranked out two pairs (I could cut a 18-24 mos. size and a 3-6 mos. size out of one yard of fabric). They took me about 2 leisurely hours for the first pair, a little less for the second. Thanks so much for the plain language instructions. They were very easy to follow. I’m a not-so-novice sewer, but haven’t done much from patterns and sometimes get a little stumped just figuring out what the directions are saying! I see that the directions say quilter’s cotton is ok to use (and I see from all the cute photos), does that really hold up?

  37. Love the pattern but found that I had to scale up to 108 percent on my British printer. It advised me not to do edge to edge printing so had to complete some edge lines by hand. So hard to get patterns to fit over real nappies that this was really welcome.

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