Melkorjunior wrote:
How long did Sue Storm wear that outfit for? And why didn't Stan Lee fire whoever came up with it?

Stan probably never saw that outfit.  He made no secret about never reading the comics again after being kicked upstairs in the early 70s.

Also it may have been a challenge to fire the person responsible, as it was none other than Tom DeFalco (aka the Editor-In-Chief of Marvel at the time). The fact that abomination of a costume was symbolic of everything wrong with Marvel in the 90s isn't exactly a feather in his cap.