Onesie Dress Sewing Tutorial

Remember this adorable girl? We fostered her in the spring… {and we are working on ADOPTING HER!!!} Please pray for us and her during this time of waiting!! Anyway… I used her as a model to make some really cute Onesie Dresses… I like  this version because the dress is long, but it’s still snaps like a onesie and stays on great. Today’s Onesie Dress Sewing Tutorial will show you how to make your own.. and its EASY!

Easy Onesie Dress Tutorial #sewing #tutorials #sewingforbaby

 I made a dress with a store bought onesie and some fabric, and a second one with a homemade onesie and fabric. This second option allows greater coordination of fabric and colors, but I think both are really great.

easy onesie dress tutorial #sewing #sewingforbaby #sewingtutorial

Ok, so you need to grab a onesie… or make one! This Onesie Pattern from the Lullaby Line {affiliate link} is a great one… easy to make and lovely directions too… It runs premie-4T, which is great!  You also need a 1/2 yard of fabric for the skirt.


 Cut your onesie in half.. You want to cut it about 1″ below the sleeve.

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If you are making your own, make the full onesie first, then cut in in half. onesie dress15

 You want the stretch of the fabric to go from side to side like this…

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I wanted my skirt to be as long as the onesie. You can make it longer and shorter depending on what you are looking for. I  lined up the bottom of the bodysuit and then left about 1″ below for the hem. Cut the top even with the onesie. You want the skirt to be about 3x the width of the onesie. This will make it fit around the front and back, plus give some extra to gather a bit. You can make it wider if you want more gathers.

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Sew the  skirt into a circle but sewing up the short side seams. This will be the back seam. Hem the skirt with a zig-zag or double needle to maintain stitch.

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Gather the top of the skirt {opposite the hem} until it is just slightly larger than the width of the onesie.

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Now, you need to create a onesie dress sandwich. Start with the bottom of the onesie right side out, place the wrong side of the skirt to the right side of the onesie lining up the tops. Now, add the right side of the onesie top matching up with the right side of the skirt.

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Sew around this mid section of the onesie dress. I added a tag to the back middle. And your skirt is done! Yeah! You can stop here or go on and add fun long sleeves to a short onesie.

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Want to add sleeves to coordinate with your skirt? This is a great way to make the store bought onesie more personalized. Lay the sleeve on a piece of paper and draw out a sleeve shape. You can trace one you already have. Make sure the length is correct.

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Cut out your sleeve on the fold.

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Hem the sleeve.

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Sew up the sleeve.

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Pin the right side of the sleeve to the wrong side of the onesie sleeve. Sew from the top side.

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Ta-Da!!! A pretty, long onesie dress!! Let me know if you have any questions or comments on this tutorial.

onesie dress6onesie dress5onesie dress tutorial

Here are a few other free baby sewing and tutorials…

Free Romper Pattern

Free Romper pattern 0-9 months

Free Romper pattern 0-9 months

Free Skirt Pattern

Free pattern: Infant and Toddler Skirt

Free pattern: Infant and Toddler Skirt

Tank Dress Tutorial

 tank dress tutorial - Copy

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Emily is a stay at home mom to two crazy boys {which she adores} , one equally crazy daughter and one amazing husband. She loves to sew, but also dabbles in crafting and recipes. Her faith, friends and family keep her going and motivated. Come along for the ride!


  1. Adorable! Both the model and the clothes. Just wish I had a little girl I could sew this for!
    Anne recently posted…No Fail Gluten-Free Donut RecipeMy Profile

  2. AH! Best of luck in the adoption process!!! I’ll be thinking of you and your family. Be sure to let us all know!
    Dianna L. recently posted…Metallic World Map Splatter ArtMy Profile

  3. she is absolutely adorable and the clothes too!
    I pray for you!!! Good luck!
    I adopted my twins 20 years ago! love them!
    gloria recently posted…Apple Mug pie (Pie de manzanas en mug)My Profile

  4. Great tutorial and a great idea. This would be a great way to upcycle old t-shirts.
    Kelley recently posted…Holey Jeans to ShortsMy Profile

  5. Congratulations and thanks for sharing at the #WWDParty
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  6. I love this! So pretty and simple. I happen to have some of the exact same blue with pink floral fabric. How cool is that? 😀

    So excited for you and your adoption process. I hope we get the chance to adopt eventually.

  7. This is super cute tutorial! Thank you so much for this :)
    Helen Gullett recently posted…One More Tag Card…My Profile

  8. Que conjunto más tierno!!! Y las fotos geniales!!!

  9. Love this!! I cant wait to try it. I’m a newbie sewer though so the gathering step is confusing. Any tips? Never done that before :)

  10. Thank you for this tutorial, such a cute idea and I am going to make this for our new grand daughter as her coming home outfit. By the way, any news on the adoption? I hope it all is going great!

  11. I just made this for my new grandbaby and ended up having to make it twice 100% cotton and the dress part just didn’t look right to me (more like a A-line skirt) so on the second one I multiplied the width of the fabric 4 times instead of 3 and it turned out perfect. Thanks so much for this because it is just the cutest dress.

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  14. Jeanmarie j says:

    I hope that the adoption went (or is going) smoothly! Did you use stretch/jersey fabric for the dress? Do you think that non-stretch fabric would work too?

  15. Awww, looks good. Thanks for this tutorial. It’s simple and clear.

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