Lady GaGa, other celebs, party at downtown restaurant for Kate Upton’s birthday

Celebrities celebrated actress-model Kate Upton’s 21st birthday with cupcakes, candles and song Wednesday night at Jerry and the Mermaid’s restaurant in downtown Riverhead.

Upton was joined by Cameron Diaz, Lady GaGa and a group of about two dozen people at the riverfront seafood restaurant. Many of the people in the party were in town after a day of shooting the upcoming film, “The Other Woman.”

The celebrities had dinner and drinks at Jerry’s to celebrate actress-model Upton’s June 10 birthday. Many were staying at a local hotel while they film “The Other Woman” on the East End, according to the restaurateur.

“They were very nice people, and we appreciated their business,” said restaurant owner Jerry Dicecco.

Many of them were stars from the cast of “The Other Woman,” including director Nick Cassavetes, actress Leslie Mann, and actors Taylor Kinney, who also stars in NBC series “Chicago Fire,” and Nikolaj Coster-Waldau, who also plays Jaime Lannister in the HBO series “Game of Thrones.”

Lady Gaga was also in town with her fiancée Kinney, who is starring in the film.

The stars mostly kept to themselves, said Dicecco, but Lady Gaga offered to take a picture with bar manager Tom Foglia after hearing Foglia’s 13-year-old daughter is “totally obsessed” with her music.

Otherwise, they stayed in the restaurant’s patio room, and Dicecco said the staff did its best to give them privacy. The group came in late Wednesday night, so there were not many other patrons in the restaurant, Dicecco said.

The staff served the celebrities cupcakes and sang for Upton’s birthday.

“It was a very cool experience,” Dicecco said.

Photo caption: Lady GaGa with Jerry and the Mermaid’s bar manager Tom Foglia Wednesday night. RiverheadLOCAL photo courtesy of Jerry DiCecco