I found this adorable onesie for my niece at Marshalls and just had to get it for her second birthday. As she is now a toddler and no longer a baby I wanted to transform it to a t-shirt instead. This was my first sewing project on my own outside of class, so I wasn’t sure how it would turn out.
Sewing level: beginner
Step 1: Measure length of shirt by using an existing t-shirt and add one inch for seam allowance. Cut off bottom portion of onesie.
Step 2: With shirt inside out fold up 1/2 inch along bottom. Iron to hold fabric in place.
Step 3: Fold another 1/2 inch along bottom to enclose raw edge. Iron to hold fabric in place.
Step 4: Turn shirt right side out and sew along bottom hem. I used a straight stitch along the 3/8 inch guideline to ensure I caught all the layers.
Step 5: Admire your work. As a new sewer I am always thrilled when a project turns out as expected!
Update: Now that my sewing knowledge and skills have improved I realize I should have used a stretch stich since the cotton jersey fabric was quite stretchy. Luckily my stitching has held through wearing and washing so far. Also, I would trim some of the excess from the side seams next time to make it easier as you stitch across them for the bottom hem.