President Obama, Mariah Carey & More Celebrity Christmas Twitter Pictures

Miley Cyrus in a beard, John Mayer as Santa for Katy Perry, and more holiday shots celebrities posted.

A One Directioner goes ugly, Lena Dunham and the Kardashians look back, and John Mayer plays Santa for Katy Perry. Plus, more snapshots from stars’ celebrations.

Twitter / @NiallOfficial

Niall Horan

Donning an ugly Christmas sweater is becoming a tradition of sorts for teen idols, so Niall Horan of One Direction followed suit this year. “Cheers to @DonalMcSharry & @fabmol from @xmasjumpers, for comin down and kitting us out! #feelingfestive,” Horan wrote.

Instagram / @lenadunham

Lena Dunham

Girls star Lena Dunham looked back at a Christmas past with this photo of herself in front of a (slightly crooked) Christmas tree. “Merry Xmas. Do you like my fleece vest? I sure do! #throwbackxmas,” Dunham wrote.

Twitter / @ KatyPerry

John Mayer

We’ll take this as unofficially official proof that Katy Perry spent her holidays cozying up to John Mayer. “Santa Baby,” Perry captioned this photo of Mayer in a Santa suit.

Twitter / @justinbieber

Justin Bieber

It’s not exactly convincing Photoshop work, but Justin Bieber’s effort in producing a Christmas snapshot of himself is admirable. The singer posted a photo of himself behind a Christmas tree (with an owl inexplicably in tow) and wrote, “See u in the morning. haha. MERRY CHRISTMAS!”

Twitter/ @MileyCyrus

Miley Cyrus

Our Christmas wishes came true when Miley Cyrus traded in her usual bondage wear for a more conservative, fleecy pajama onesie. “Ho ho ho!” Cyrus wrote.

Instagram / @nickcannongram

Mariah Carey & Nick Cannon

The Carey-Cannon Christmas was spent in a log cabin in Aspen—where Nick apparently tried to get a jump on Santa while he wasn’t looking. “Me robbing Santa!” Cannon wrote.

Twitter / @KimKardashian

Kim Kardashian

The Kardashians looked back on their tinier, more innocent selves with this photo of Kourtney, Khloe, and Kim all decked out in holiday gear. “LOL always matching!” Kim captioned the photo.

Twitter / @barackobama

Barack Obama

President Obama is never one to miss out on the Twitpic-ing action. Both FLOTUS and POTUS extended their well wishes with the caption, “Barack and Michelle wish you a Merry Christmas and Happy Holidays.”