Lance Bass and Ryan Rottman celebrate Ryan Rottman's birthday at Haze Nightclub on March 20, 2010 in Las Vegas, Nevada.

[/caption] The Bellagio on Sunday night is the hotel on the strip to party at because The Bank Nightclub has one of the best industry parties Las Vegas Locals of the week.  As usual Dave is seen here partying at the Bank here with a gorgeous blonde....no surprise there. (New girlfriend possibly?)