If it actually worked right, it could possibly be kinda hot... but on most girls that do that, it looks horrid.
I know somone who had one. for a week, which is about as long as she could stand to have it. She only got it so she could cover up a tattoo until she decided to remove it.
the whole time, her lower back was wicked ass sore, it was red from being all swelled, she couldnt sleep on her back like normal, and it hurt to do anything requiring the back skin being stretched (bending over, bending back, twisting right or left.. etc)
She learned her lesson. Now she has a bunch of wicked scars on her back to compliment the tattoo. Which she will have to wait even longer if she actually plans on getting it removed now.