More to explore:
tshirt to dress
DIY TShirt Dress
easy DIY maxi dress
Game day dresses made with tshirts
Upcycled tshirts to strapless summer top
Cut down the side of your tshirt and tie it at the bottom. This site had a few other cute tshirt conversion ideas.
Gameday dress tutorial
T-Shirt Dress. This is how I do almost all of my girls dresses.