Rhianna celebrates 30th birthday in New York

Rihanna celebrated hitting the BIG 3-0  in NYC, but it was less of a bad girl RiRi party and more of a super formal Miss Fenty affair. Hey, she’s maturing. — followed by a champagne-flushed party with a performance from Toni Braxton.

RiRi celebrated her milestone birthday at the luxuriant Landmark Rooms with stars including Paris Hilton and Leonardo DiCaprio, who snuck into the party later.

Also, there was Rihanna’s billionaire Saudi boyfriend, Hassan Jameel, whom sources say she looked “very close with” all night.

Rihanna’s group shared a four-course meal at The Grill, before moving to the land marked Pool space for the afterparty, where Braxton performed.

“It was a really elegant black-tie event. Rihanna and her guests dined on gnudi with caviar and peppered filet mignon, washed down with a lot of champagne.