Many users theorized that the photo was for Hader’s children. The Beau if Afraid actor shares three children—Hannah, 13, Harper, 11, and Haley, 8—with his ex-wife, the actor and director Maggie Carey.

“This has to be for his kids,” wrote @learning_to_die.

“He’s definitely sending that to his daughter(s),” said Chelle.”The two people that run my brain,” wrote Collette.

“I was freaking out when I saw them,” said lyss.

“The most ‘father of daughters’ selfie ever taken,” joked Alison Herman.”His little girls are gonna lose their minds!” commented @Rainbow08241763.

This isn’t the first time Swift and Hader have broken the internet. The Grammy winner has appeared on Saturday Night Live numerous times over the years. Hader was a cast member from 2005 to 2013, and has since returned as a guest.The duo worked together on the 2010 sketch “Firelight,” a parody of the Twilight movies.

Swift starred as Stella Swan, a satire of protagonist Bella Swan (portrayed by Kristen Stewart in the franchise), while Hader played Fredward, a werewolf spoof of the saga’s primary love interest, vampire Edward Cullen (Robert Pattinson).