RIHANNA KEEPS THE PARTY GOING

Anna Wintour started Monday’s Met Gala, but Rihanna finished the annual fashion fete with her traditional after party on W. 14th St.

The “Love on the Brain” singer (left) took over her longtime friend Richie Akiva’s club Up & Down to host a big bash that saw rumored couple Emma Stone and Justin Theroux exit together only days after they were spotted on a dinner date. Those two were only part of a busy night that also saw newlyweds Emily Ratajkowski and Sebastian Bear-McClard making the rounds until 4 a.m.

“Rihanna rolled in around 2 a.m. wearing a silver two-piece pajama-looking pantsuit and gray glasses,” according to one partygoer, who also reports that “Janelle Monae and Trevor Noah had a danceoff.”

We’re told that reality-spawn-turned-models Bella Hadid, Gigi Hadid and Kendall Jenner chowed down on hamburgers while sipping Armand De Brignac Ace of Spades Champagne. Brian Niemietz