I love Love Leggings! I don't find them small, but they look it when you take them out of the bag, or after you wash them.
They have 4 way stretch, so if you put them on properly they stay put all day. I think they are the best leggings on the market, and I have tried countless brands over the years.
I've just had a thought - I get the high waisted ones. I find them better for larger tums?. The standard ones don't fit me as well. If you send them back they will replace them no problem - their customer service is great.