Justin Bieber can now add a new job to his résumé: wedding singer.

The pop star's manager, Scooter Braun, tied the knot on Sunday, marrying Yael Cohen. The bride called the wedding "the best day of my life," and in addition to the Biebs, the star-studded ceremony was attended by Ed Sheeran, Carly Rae Jepsen, Sophia Bush and Tom Hanks and his wife, Rita Wilson.

But it seems JB may have stolen the show. In a video posted by TMZ, Justin is seen breaking out into the Beatles song "All You Need Is Love" as Scooter kisses his bride front of their friends and family.

Justin was just getting warmed up though. Dressed in an all-black suit and hat, which he showed off on his Instagram earlier that day, the "Believe" singer got behind the mic, dancing and jumping while singing "Call Me Maybe" -- alongside Carly Rae.

Justin wasn't the only entertainment of the evening. The "Confident" singer posted a hilarious video on Instagram of Hanks getting his groove on as he sang along to Montell Jordan's hit song, "This Is How We Do It."

Scooter and Yael, who's the founder of the nonprofit organization "F--k Cancer," got engaged in January. On Monday (July 7), Justin posted a photo of him and Yael, adding that he "can't believe Scooter found someone that puts up with his bs ;) love you guys."

In another pic, Justin posed with Ed Sheeran -- who was also photographed serenading guests at the reception -- with the caption, "@edsheeran is one of the only people on my iPod."