Gwen & Gavin's Boxing Showdown

Gwen Stefani and Gavin Rossdale join Brad Pitt and Angelina Jolie for a couples night out late Saturday at the MGM Grand Garden Arena in Las Vegas, Nevada.

The Hollywood power coupled hopped into a limo together after watching the flashy welterweight Mayweather-Hatton boxing match, where American Floyd Mayweather knocked British-born Ricky Hatton out in the 10th round.

Also spotted ringside were Rocky actor Sylvester Stallone, actor Bruce Willis, golf champ Tiger Woods, retired pro boxer Sugar Ray Leonard, comedian Will Ferrell, and Welsh singer Tom Jones, who sang the national anthem.