DIY T-Shirt Romper + FREE PATTERN

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Upcycle an adult t-shirt into a baby DIY t-shirt romper with this free sewing pattern in size 6 mos. It’s a great way to save money and save time!

Do you ever have a t-shirt that you just love, and you wear it out until it’s soft and comfortable? Turn it into a baby t-shirt romper with a free sewing pattern!

I love cutting up clothing to make something new. It’s so great to be able to reuse something I have and to save time and money! Enjoy this free pattern for a DIY t-shirt romper for your baby.

I just love baby sewing projects! They are so sweet and tiny and cute!

To get the free sewing pattern, scroll to the end of the tutorial. Put your email address in the form under “Get the Free Sewing Pattern Here.” Once you confirm that you want to receive emails from Heather Handmade, the free pattern will be sent to your email address. Check your spam and promotions for the email.

Do you remember the original upcycled t-shirt romper? I’ve reworked the pattern and redid the pictures to give you the best tutorial possible.

I hope it’s easier to use and easier to understand! I’ve also released a multi-size upcycled t-shirt romper and dress sewing pattern. It has multiple views and multiple sizes.

I’ve come up with a bunch of easy variations to customize your t-shirt romper so you can make lots of different ones!!

Here’s a list of all the variation ideas:

Add a drawstring to the waist
Mix up fabric from different t-shirts for a colorblocked t-shirt romper
Add a ruffle bum to the back of the t-shirt romper
Add Gathered sleeves and a gathered hem t-shirt romper

What is a PDF sewing pattern?

A PDF pattern is a sewing pattern designed on the computer and organized so that it can be printed on several letter or A4 size pieces of paper.

I love using PDF sewing patterns because if the pattern gets ruined or if my children or I changed sizes, I can always print it again. It’ll never be destroyed since I have a digital version!

How do you use a PDF sewing pattern?

Open the PDF on a computer and click print. When printing make sure that the scaling is set to 100% or no scaling so that the pattern prints at the correct size.

Once the pattern is printed it can be taped together to get the full size. Then the pattern can be cut for each pattern piece size or individual sizes can be traced so that the pattern can be used again and again. Learn how to use PDF sewing patterns.

Supplies

Free 6 mos Romper Pattern – get it at the end of the post
T-shirt to cut up
Interfacing
Plastic snaps
Sewing tools
Sewing machine

Cutting Instructions

1. Cut the side seams of your tee to open it up. Fold the front in half along the center front.

2. Lay the pattern with the fold on the fold and the neckline lining up with the neckline. *The neckline might be a slightly different shape, but line it up the best you can.

3. Do the same with the back to cut out a back piece.

4. Cut out one gusset. Make sure the stretch is going the right way.

5. Lay the sleeves on top of each other. Line up the bottom of the sleeve pattern with the hem of the sleeves. Cut out two sleeves.

6. Cut out three facings. I layered my layers together so I only had to cut it out once.

The pieces you need: one front, one back, two sleeves, one gusset, and three facings.

Sewing Instructions

1. Overlap the back neckline over the front neckline by 2.5″. Pin and sew with a zigzag stitch along the edge.

2. Line up the sleeves with right sides together with the armscye. Pin and sew with a zigzag stitch with 1/4″ seam allowance. Finish the edges with a zigzag or serger.

3. With right sides together line up the sleeves and edges of the romper with 1/4″ seam allowance. Zigzag or serge the edges.

4. Take one of the facings. Line up the inside curve with the front inseam. With right sides together sew with 1/4″ seam allowance.

5. Finish the outer curve of the front inseam.

6. Flip the facing around into the inside of the romper. Sew with a straight stitch .75″ from the edge to tack the facing to the inside.

7. With right sides together line up the gusset with the back inseam curve. The gusset will fit right into the extra seam allowance on the back. The curve of the gusset is opposite to the curve of the inseam so it’s a little tricky to sew. Sew with a zigzag at 1/4″ seam allowance.

8. Take the last two facings. With right sides together sew around the outer curve with a zigzag stitch with a 1/4″ seam allowance.

9. Turn right side out.

10. With right sides together line up the inside curve of the facing with the back inseam going around the gusset. Sew with a zigzag stitch at 1/4″ seam allowance.

11. Serge or zigzag the edges.