A shirt that looks like it was made for a child or infant that is sometimes worn by teens and adults. Should never be worn by an obese female or any male. May be worn by sexy females, especially to show off their neathage / under boob.
Dude 1: Did you see that chick wearing that baby GAP shirt before?
Dude 2: Yeah that was sexy as hell!
Dude 1: Yeah it accentuated her neathage so well!!
by implicit March 28, 2008

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