Justin Bieber paid tribute to Avalanna Routh, the 6-year-old superfan who lost her battle with brain cancer last week. As he performed his hit, "One Less Lonely Girl" photos of Routh played on giant screens.

• Justin tweeted, "Goodnight Avalanna. Tonight was for u. I love u."

From PulseOfRadio.com

Thumbnail via PulseOfRadio.com