Beyoncé
Online

It’s official. According to Vogue, the star of last week’s fancy-shmancy Met Gala was . . . a tie! Both Beyoncé and a crop-topped Rihanna grace the cover of this year’s Met Gala special edition, out Tuesday.

“When we fell upon the photo of Rihanna AND Beyoncé, we thought, ‘Bingo,’ ” says Chloe Malle, Vogue’s social editor and editrix of the 132-page annual glossy.

After leaving a celeb-filled after-party at the Standard Hotel at 1 a.m., Malle and five other sleepy-eyed staffers gathered at the Vogue offices at 4:30 a.m. to put together the book — and to gossip about the event. Conversation ranged from Rihanna’s abs (rock-hard) and Lauren Santo Domingo’s JAR diamond rose necklace (“major,” according to Malle) to whether model-of-the-moment Kate Upton’s barmaid-cum-flamenco dancer frock was a fashion no-no.

“No comment,” Malle says diplomatically, as she sorts through a mountain of photos from the evening.

“We have to include one of Neil Patrick Harris and his boyfriend,” she announces. “Anna is super into them and they’re in Thom Browne.”

Now, back to the gossip.

“Taylor Swift and Karlie Kloss were palling around the whole night,” continues Malle. “And then Lena Dunham, Taylor Swift and Selena Gomez were taking selfies together during dinner.

“And there’s this great moment where the Givenchy table was just stacked with really impressive people. And at one point, everyone was standing up and chitchatting to one another, and Jay Z was sitting alone, just eating his chicken. It was awesome.”

At around 6:45 a.m., the publicist whispers to production director David Byars that Anna Wintour is arriving at 7:30.

“She won’t really come at 7:30, will she?” he asks, visibly nervous. Byars looks to the table, which is covered in pics, carrot muffins and Dunkin’ Donuts Munchkins.

“I’m going to move these,” he says.