Im 51 160 lbs. ordered size 11 first time and they weren't as tight through my calves as Id like ( I have chicken legs) I ordered a size 9 the second time and they cost just right! I will never buy another brand of jeans so long as I live. These are so flattering on. Theyre stretchy so I love that. I ruined my first pair in the wash so I had to buy another pair.