Justin Bieber Makes Surprise Show Appearance For Ellen DeGeneres' Birthday Week!

Justin Bieber flashes a smile while making an appearance on The Ellen DeGeneres Show, which airs on Thursday (January 29)!

The 20-year-old entertainer reportedly chatted about his personal life and his buzzworthy Calvin Klein ads on the show, which happened during host Ellen DeGeneres‘ birthday week.

PHOTOS: Check out the latest pics of Justin Bieber

“I can’t believe the surprise I got for my birthday show. Then I saw his face. Now I’m a Belieber,” Ellen tweeted.

Also pictured: Justin covering his face with two seat cushions while arriving at a dermatologist appointment on Wednesday (January 28) in Beverly Hills, Calif.