A heterosexual woman that accompanies a gay male friend to social gatherings, in order to maintain the appearance that the gay man is straight.
Lance realized early in his Wall Street career that gay men have a glass ceiling above them. When he met his sweater girl Stephanie, he knew immediately that he was going to make partner.
by Jack Stadnick February 1, 2006
Girl with an attractive bust who wears tight sweaters.
I have an attractive sweater girl just around the corner from my cube. Women are just about the best thing in life!
by sts0364 January 13, 2005
A heterosexual woman that accompanies a gay male friend to social gatherings, in order to convince others (family members, business associates) that the gay man is straight.
Lance realized early in his Wall Street career that gay men have a glass ceiling above them. When he met his sweater girl Stephanie, he knew immediately that he was going to make partner.
by Phil Ascio January 21, 2006
Warm and wonderful nightowl of a Moderator on Fark.com, whose mellifluous tones grace the Opry airwaves, the Detroit blue line--and all life in-between. Patron to pups and stray farkers, as well as hyphens, Admins and rookie Mods.

Word has it that the girl really knows how to fill a sweater, too.
Man, that Sweater Girl can turn a comma into a hyphen, with just her voice!
by a grateful farknation March 1, 2005
A rare, sexy girl with double D's that can make an appropriate sweater look skanky.
"Look at Whit. Daaammmmmmmn she's a sweater girl fo sho."
by whitb611 April 8, 2010
An Asian girl that wears sweaters every day. Usually being obsessed by a hot guy named Ly.
Hey Ly is that the Asian Sweater girl you are obsessed with?
by WinterLy Bear October 1, 2020
It's a girl who wears a sweater from the first day of school through their last day of school for the rest of the school days and never takes it off ever to show the people her short sleeve.
Boy: Your a sweater girl.
Girl: *Gets annoyed*
*Few months later*
Boy: Your still sweater girl. Hahahaha.
Girl: Stop. *Gets annoyed*
by Sweater Girl November 10, 2019