Nice pants, Go up a size if you have some thigh.
I'm 5'5 153 lbs and normally wear a size 10 or medium in virtually all the clothing I order. In these pants, I ordered a size 10 as normal but they were too tight in the thigh (I could zip them but they looked painted on); I then ordered a 12 and they looked pretty darn good but I like a lot of room when I hike so I sent them back and ordered the 14 (yikes). The 14 are a bit too big and I probably should have stuck with the 12 but they'll still work for me. Either way the pant is worth it. I got the alloy gray.