California Costumes womens Egyptian Goddess Adult-Sized Costume (pack of 1)

Dose this costume have a lil elasticity??? I'm 5"2 155bl wear 13 bottoms and L-XL depending on material??? What size should I order...?

I’m 4’10 about 115lbs and have a small chest, what would be a good size for me to get?

I'm 5'10 170lbs what size should I get?

Is 2X smaller or larger than an xsmall?