After Halloween I purchased 3 t-shirts for 70% off the origional price which made for a great deal for me. The problem was that they all shrunk in the wash to sizes I can't imagine many people could have fit into. One of them I couldn't even begin to fit over my head. Luckily there are methods of stretching one's t-shirt to a better fit.
So I thought I'd do a couple of fast recons- each taking less then 15 minutes to do. (the second will only take you about a minute)
Fold it so that your side seams match up.
Next at the top of your shirt cut a triangle out like so.
Repeat cutting triangles down your shirt as far as you like to go.
Next fold your shirt over about an inch like so;
Cut triangles down a second row stopping right below the last one on the first row.
Repeat that process until you've gone as far over as you want to go. I put a bright colored t-shirt under mine so you can see what it looks like when finished.
Stratch the back of your shirt and then remove the hem of your shirt.
Cut fringe along the bottom of your shirt.
Stretch out fringe.
I decided I wanted the fringe on my sleeves to be as long as possible so I removed the seam in my sleeve using a seam ripper but if you don't want to do this part you can just cut off the hem and begin to cut fringe on your sleeve if you want.
Stretch out fringe on sleeves.
Take two strands at a time on fringe on the sleeves only, tie them into knots.