Britney Spears, who is pregnant with her second child, says she's not ready to retire from performing."I can't wait to do that again," Spears, 24, said in an interview with Harper's Bazaar. "But I really have to take my time and do it right and be safe. Actually ... not that safe. When you perform, you have to be dangerous."

The pregnant pop princess also says she would "definitely" consider a musical collaboration with her husband, Kevin Federline, 28. His debut hip-hop album, Playing With Fire, is expected to be released next month.

"I'm so proud of Kevin," Spears says. "He's been working so hard on his own album since I got pregnant with Preston," the couple's first child, who was born last September.