I ordered a Sz 5. Im 5 3 1/2 140lbs. These appear to run pretty true to sz and are stretchy. Expect to hem them if you're short, of course. But well made they are not. I ordered in 2 colors in my sz and they were 2 different sizes. Both fit but I was worried. And BOTH buttonholes were sewn  SHUT. What is THAT?! I have never experienced that before in my life!!! Poor workmanship from China. And of course too expensive to return. So more $ for the tailor. Ugh.