Quite a while ago I had a pair of these in large but they became very baggy on me when I lost some weight.  I got some smalls and they were still too big.  I just ordered the XXS and they fit quite well with the exception of the length.  I'm 5'3", 120lbs, size 3/4 with 33" inseam.  The pants get shorter as the size goes down, about 1/2-1" per size.  The XXS are over an inch shorter than the smalls, short enough to hike up way above my ankles when sitting.  I cut the strings in the legs off and can roll them up for a summer look.  I think the sizing of these is inconsistent, because when I bought 2 different colors in XXS one pair is a little bigger than the other.  It might just be bad luck I got ones that were too short.  It also might explain all the reviews of "they run big" and "they run small" with no consistency.  Other than the length, these are great pants which is why I bought 2 more pairs.  Super comfy and cute!