Update, 12/13: Mariah Carey and Beyoncé hung out on Sunday night—as documented by their epic selfie—but there was an important detail missing in the photo: their kids. Late last night, Mariah posted another shot from backstage last night, revealing that her twins Monroe and Moroccan and Bey's daughter Blue Ivy Carter were also in tow.

"Backstage at Christmas time with our beautiful children," Carey captioned the post.

instagramView full post on Instagram

Her two 5-year-olds, whom she had with ex Nick Cannon, are festively dressed in red black and white, while 4-year-old Blue Ivy and her friend wore matching headbands and pigtails. The best part? Blue posing off to the side wielding a massive fan over her face, like the little queen that she is.

Original post, 12/12: You might've already blasted "All I Want for Christmas Is You" a hundred times since Thanksgiving, but Beyoncé just one-upped you in Mariah Carey holiday fandom. Last night, she supported her fellow singer at her Christmas concert in New York City's Beacon Theater, and even met up with her backstage. Carey snapped the evidence in a selfie.

"I love you @beyonce thank you sooooo much for coming out tonight!" she captioned the photo on Instagram.

Beyoncé: the ultimate Queen and Mariah Carey groupie. Take a peek at the festive performances from Carey's holiday show below. (They're even better if you imagine Beyoncé fangirling from the audience.)

From: Harper's BAZAAR US