Button Fly Ankle Skinny

If you know me, I'm a die hard black leggings girl.  Like I buy them in bulk.  I am currently in day 2 of wearing these to work and I think I love them.  They haven't bagged out much.  There is a bit of give in the seat and thighs on day 2 but I don't look like I took a dump in my diaper (you know the look).  As a shorter girl (5'3") the hem hits right at my ankle so I don't trip on the fringe.  They are a mid rise and sit about and inch below my belly button.

Sizing Help: (Just my best guesses based on customer feedback)

31= 10/12

32= 12/14

34= 14/16

36= 18/20

38= 22

FRONT RISE: 12 1/8", INSEAM: 27" approx.
LEG OPENING: 9.75" approx.