I remember reading Stephen King (in On Writing) say that there was no need to describe what a person was wearing. The very next book of his that I picked up started with: He was a big, broad-shouldered man in a worn and scuffed corduroy jacket and plain twill slacks

I think this shows that there is no hard and fast rule but, for me, there is also nothing worse than a sentence that includes: She had 48DD breasts