Britney Spears admitted to Ryan Seacrest on his radio show this week that it is possible her upcoming Planet Hollywood residency in Las Vegas could last as long as one to two years. Seacrest asked Spears in a phone interview on On Air with Ryan Seacrest if there was any truth to rumors that her stint in Vegas could extend for as long as two years. "It's quite possible...nothing confirmed yet," Spears said. Listen to the interview with Spears here.