Shirt points cops to bottle attacker

SOMETIMES IT doesn’t pay to advertise.

Cops arrested a 22-year-old woman wanted for a bottle attack in the Union Square train station after they identified her by the shirt she was wearing, police said Thursday.

Tiera Perry was sporting a Mighty Quinn’s shirt when cops say she attacked a 20-year-old inside the station at 1 p.m. on Wednesday.

The two women were walking through the mezzanine when they accidentally bumped into each other, sparking a fight.

Perry ended the verbal backand-forth when she pulled out a glass bottle and hit the younger woman in the head with it, scratching the woman’s forehead.

Investigators reviewed MTA surveillance cameras and realized the assailant was wearing a Mighty Quinn’s shirt advertising the barbecue franchise.

They went to the closest Mighty Quinn’s restaurant, at 75 Greenwich Ave., and found Perry working inside, police sources said.

Cops charged her with assault and reckless endangerment.