Justin Timberlake put his music duties on hold to host a PGA Golf Tour event in Las Vegas yesterday.The Sexy Back star looked rather dapper in his golfing attire as he stunned onlookers with his impressive back swing.The star put on his serious face for the event – catchily entitled the Justin Timberlake Shriners Hospitals for Children Open – which was aimed at raising cash for charity.A handful of girls scampered to get their picture taken with the singer and his girlfriend Jessica Biel – who was on hand to cheer on her man during the pro-am.Other celebrities swinging for charity at the event included George Lopez, Josh Duhamel, Chris Kirkpatrick, Amanda Beard, Janet Gretzky, Luke Wilson and Greg Kinnear. [Source]