Cute, but tiny

I love the design of these leggings, but they are tiiiny. According to the sizing guide, I should fit in an XL, but the XL fits like a Medium. They are way too tight, so you can see undergarments. The stropes on the leg cut in uncomfortably, and the waist just looks strange. I gave them to a friend who is a size 6-8. It would be one thing if they were this small and were compression leggings, but they aren't.