These leggings are great! I love the high rise, the thick band on top does great at holding everything in and helps smooth and pouch you may have going on if that's what you're looking for! I've bent and squat and these are not see-through. Fabric is nice and thick, feels of great quality. I'm 5'6" and 133lbs and I ordered these in an XS. The band does not fold over at all either when moving or working out in the gym. I ordered the matching sports bra to these as well and I got an XS in that also. I'm usually a 32B in bras. If you're between sizes I'd go down the size being that the straps do seem to run long and with the deep V plunge you'd rather it be a little snugger than a little big.
Jil recommended this style