I hope this guide helps if you want to try as well, its my first how to so feedback would be great.
The pictures are a bit dark I'm afraid as the camera didn't pick up great detail from this colour t-shirt.
Take one t-shirt to be re-fashioned one that is a snug fit works best, otherwise you may need to take in the sides. Be brave take a deep breath & cut off the sleeves.Then remove the trim on the bottom inch of the t-shirt in one piece & keep, this will form the neck tie later on meaning you don't have to stitch one.
Lie the piece flat, if you wish you can draw a straight line across the body of the t-shirt under the neck opening, then cut along it. Or like me you can just dive in and cut by guess work.
Then turning the piece so the back is facing draw a line connecting arm hole to arm hole, and cut across the back or just cut away.
The t-shirt should be looking like the below picture now, if you want to neaten the seams around the bottom now is a good time to do it, but I kept mine raw & they just roll up a bit at the bottom.
Now we need to make the halter neck piece of the t-shirt, lay the shirt front down and turn over the top front neckline by roughly one inch, stitch across this in a matching thread or use a contrasting one for a detailed effect, leaving openings at each end this creates the drawstring for the top.
Take your trim from the bottom of the t-shirt & cut once so you have one long piece, then thread this through the seam.I did this by clipping a hair clip to one end & feeding it through, or you could use a knitting needle to push it through. When pulled though to an even length tie a knot in each end of cord & runch front up.
Then wear, sorry its a bit of a bad picture of me but hopefully you get the idea. I made this during an episode of Doctor Who so it's a quick make to do & I love the fact that I get to wear my t-shirt now.
Loving the Summer sunshine