This “brandy bandit” should have saved the celebrating until after the heist.

A gun-toting thug was busted Tuesday after detectives traced his fingerprints off a bottle of cheap booze he left outside the T-Mobile store in Queens he allegedly robbed, cops say.

Gregory Kennedy, 31, is now accused of pocketing $11,435 from stick-ups at 11 Dunkin’ Donuts, T-Mobile stores and other businesses between Oct. 11 and Dec. 30.

On Nov. 25, Kennedy drained a half-pint of Paul Masson Grand Amber while staking out a T-Mobile store on Jamaica Avenue from an unlicensed livery cab, law-enforcement sources said.

Surveillance cameras caught him leaning out of the car to set the empty bottle on the street before he robbed the phone shop of $2,750, according to police.

Detectives dusted the bottle for prints, and cops busted him Tuesday when he was stopped for speeding.