After two delays in the past month, Lil Wayne finally began serving the one-year jail sentence stemming from his infamous 2007 arrest for gun possession. The rapper, who pleaded guilty in October in exchange for a lighter sentence, entered New York's Rikers Island on March 9. "I just say I'm looking forward to it," Lil Wayne, whose real name is Dwayne Michael Carter Jr., recently said of his future behind bars. With his sentencing postponed twice, once for necessary dental work and again after a fire in the Manhattan courthouse, the star celebrated his prolonged freedom by performing with Jay-Z in NYC's Madison Square Garden on March 2. "We're with you 100 percent," Jay-Z told Lil Wayne in front of a cheering audience. The troubled rapper could be released in just eight months with good behavior.