Chicago rapper Yung Berg was arrested in Miami today (Dec. 21) for smoking weed, a rep for the artist told AllHipHop.com. The arrest took place on the set of the video for singer Ray J.’s new single “Sexy Can I” from his forthcoming release All I Feel, which features Yung Berg. According to sources, the 21-year-old rapper, born Christian Ward, is currently being held at the Miami-Dade Jail. Originally signed to DMX’s Bloodline Records at age 15, Yung Berg is best known for his 2007 single “Sexy Lady,” which peaked at the number 18 position on Billboard’s Hot 100 charts. The single, which was originally featured on Berg’s Almost Famous EP, also appears on his debut full length album Look What You Made Me Do, due out in March 2008.