AceShowbiz - Lady GaGa gave her dad's Grand Central Station diner in New York a big boost on Friday, July 13, when she dropped by for a bite.

The Poker Face singer donned an Art Bird T-shirt and dark glasses as she went to work at the new restaurant, serving drinks and food to commuters before sitting down with her family to enjoy some beer and chicken.

Fans swarmed the diner to take photos of Gaga, who even posed for a few snaps after her meal.

The pop star also posted photos of her day out in the Big Apple on Instagram, adding the caption: "Had to stop at my dad's new restaurant with @thechefartsmith. It's called @artbirdnyc if you want killer fried chicken n' more at Grand Central Station food concourse in NYC."

Had to stop at my dad’s new restaurant with @thechefartsmith. It’s called @artbirdnyc if you want killer fried chicken n’ more at Grand Central Station food concourse in NYC.

A post shared by Lady Gaga (@ladygaga) on Jul 13, 2018 at 1:32pm PDT

The lunchtime stop came during a break in recording for Gaga, who is in New York working on new music.