Hollywire: We caught up with Mike Posner at Justin Bieber’s ‘Believe’ premiere! Mike talked about his friendship with Justin, and what he admires most about working with him. Mike also had the opportunity to talk about his new single, “Top Of The World,” with Big Sean!

Awesomeness TV: Hunter March met Mike Posner at Justin Bieber’s Believe movie premiere and he got a little starstruck. Watch as Hunter tries to find out what Mike has been up to and why Mike is such good friends with Justin. Make sure to stay till the end to see how much Hunter loves Mike!…

Clevver caught up with Mike Posner at Justin Bieber’s Believe movie premiere in Los Angeles, CA on December 18. Mike talked about his friendship with Justin, touring with Justin on the Believe Tour last summer, and he confirms a collaboration with Justin will be on his upcoming sophomore album, Pages. Mike also had the opportunity…

Mike Posner was one of the many celebrities who hit the purple carpet at the premiere of the new Justin Bieber Believe movie on Wednesday, December 18 at the Regal Cinemas L.A. Live in Los Angeles, CA. Mike co-wrote and co-produced Justin’s 2012 hit single “Boyfriend” off his third album Believe. Mike toured with Justin…