cut 2 identical rectangles of fabric
height - measure from shoulders to hips (or longer if you wish)
width - i took a different boring regular wide T-shirt and measured from sleeve to sleeve
my rectangles were each 50cm x 65cm (about 20 in x 26 in)
Cut out a rounding on both sides of each rectangle and on top according to the sketch. (You should now have two identical pieces of fabric looking like the darker shade of blue in the sketch) :
Pin the two fabric pieces right sides together and sew along the rounded side edges and the two straight edges on top (the purple dotted lines on the sketch).
Believe it or not,
You've got a new shirt!
Well, you got a shirt with raw edges... you can always finish off the edges with a regular hem or whatever else you like... but than it might take you 10 minutes to finish the shirt :-) I only finished off the edges on the sleeves in my version in order to hide the selvedge of the fabric that was showing on one side. It looked odd to have one sleeve with a wider stripe of the light blue color...
- If you use a striped fabric like I did line up the stripes when cutting the fabric and before sewing the fabric together line the stripes up again and pin in place.
- Add a matching fabric flower for a fresh look!