5'4? That would be size Small. However, your skirt, *ahem* jacket will cover most of them. Actually, maybe just buy long insulated socks and go without ski pants, as your skirt/jacket will keep your legs warm anyway.
If anyone ever told you that I give a damn, they damned well told you wrong!
The other day I was eating Starbursts and watching TV, and then a Starburst commercial came on. I was like, damn, that's profound.