The luck of the Irish was not shining on this woman – who was busted Friday for guzzling beer from a see-through Big Gulp cup.

A summons was on tap for the unidentified woman, who even sported a T-shirt emblazoned with “Irish Today Hung Over Tomorrow” while sheepishly clutching her 7-Eleven cup.

The St. Patrick’s Day brew-haha took place about 10 a.m. at the Seventh Avenue entrance to Penn Station, where green-clad revelers milled about ahead of the parade.

Unlike the cheerful passers-by, though, the woman was no hoppy camper.