Zac Efron Sings & Plays Guitar for Ellen DeGeneres on Her Birthday - Watch Now!

Zac Efron gets ready to serenade Ellen DeGeneres for her birthday on The Ellen DeGeneres Show in his appearance, airing today.

“You know what was really weird though, is like before the movie or like anyone even know about the movie before we finished filming it that picture came out,” the 26-year-old actor said during his interview about the famous That Awkward Moment scene where he is naked on the toilet. “So like that was like the first thing anybody knew about the movie and so like my parents were calling me going what the hell is this picture?”

Check out Zac serenading Ellen below!

FYI: Zac is wearing a Billy Reid jacket.

Click inside to watch Zac Efron‘s full interview…