Rapper B.o.B. headlined Perez Hilton‘s “One Night in Chicago” concert at the Hard Rock Hotel last Thursday evening (Aug 5) in Chicago, IL.

R&B singer Usher hung out with CNN anchor Don Lemon as he and his New Look Foundation hosted a “Powered by Service Day” Thursday in Atlanta.

Super model Iman helped celebrate ESSENCE Magazine’s 40th Anniversary by appearing on the trading floor of the New York Stock Exchange in New York City.

On the other side of the world in Tokyo, Japan, Jaden Smith and his family, including his parents Will & Jada Pinkett Smith and his little sister Willow, along with his on-screen co-star Jackie Chan, waved to the press and fans at the Japanese premiere of “The Karate Kid” at Roppongi Hills Arena.

And young Pop star Justin Bieber met up with band camp students at Seminole High School in Sanford, FL as to help announce Best Buy and the Grammy Foundation’s donation to the Seminole High music program. He even played a few tunes a capella (with the help of his guitar) for the students.