The
shirt a slut commonly wears when she goes out to grasp the
attention of guys or a revealing or tight
shirt a girl will wear to a party or bar in order to show she is available and would like attention from any guy.
X: "We should go out tonight."
Y: "Yeah! I'm feeling a little naughty, I should wear my slut
shirt."
or
X: "Why are all the guys
dancing with that whore?"
Y: "It's because she's wearing her slut
shirt."