Here are some high waist yoga leggings from China. One name given to them on ebay is
Womens Sport Yoga Running Pants High Waist Trousers Leggings Fitness Gym Clothes
These are not particularly see-through but they are quite clingy to skin. In photos advertising them, they show the shape of the butt, which some like to do and some do not.
When they arrive, it is not clear which is back and which is front. I think I have figured out the best for front.
Because of some car accidents some years ago or other factors, my head tends to be far forward compared to the shoulders. I have to intentionally hold it back to produce a nicer photo. The chiropractor believes I should work on having my head held high.
I wonder if I would have a different result if I pulled the whole thing higher. So I put the item back on and pulled higher . . . better results if you have a purpose of showing some cleft.