GB1 uniform size help

My wife is in need of a flight suit. She wants to buy one from here but is unsure what size to get. Do the suits run big or small that kind of thing. Her measurements are.

H 5’3

C 34

Inseam 29

W 34

S 27

Any suggestions would be great thanks

Your other post still existed: Link, I’d moved it to the wanted forum as I felt it was more appropriate there.

I appreciate . I already planned on getting here from the store. The post was more for information on how the sizes run and which based on her measurements would be the best option