This is a simple fix for a T-Shirt, where the neckline is too tight or unflattering, or the sleeve and/or length of T-Shirt is too short. Any color T-Shirt will work. Fabric selection, bodice design, and trim is your choice.
Step 1: Materials:
Sewing pattern (choose one with a separate bodice)
Fabric to match T-Shirt
Thread to match
Step 2: Sew Bodice
Sew bodice following pattern instructions and sew trim to bottom of sleeves at hemline stitching using zi-zag stitch (this will allow for stretch in T-Shirt fabric)
Step 3: Cut T-Shirt:
Measure T-Shirt from bottom edge to underarm and cut at same measurement all the way around . Sew trim to bottom at hemline stitching with zig-zag stitch.
Step 4: Sew T-shirt Bottom to Bodice:
Sew bottom of T-Shirt to finished bodice, placing a pleat in front and gather in back to allow for any excess in T-Shirt bottom.