Just came back from the airport today and my place was extremely hot. I don't have much sleeveless top, so I took out a t-shirt and made tank top in 15 minutes!
I have two versions of this t-shirt. One in navy and one in black (pictured above). The navy and black looks almost identical in under the light so I decided to use the black one to experiment. Since it's dark the imperfect seam won't really show.
I simply cut the sides and this was the result! Not the best but I will probably wear it at home anyways.
I used the leftover scraps and created two ribbons shoulder straps. I didn't sew it together so if I don't like the ribbons I could simply take it off. Now that the AC is on and I'm wearing a tank top I can finally breathe!