Britney’s Femme Fatale Costumes

Want to go to Britney Spears' Femme Fatale tour for cheap -- really cheap? You might want to check your e-mail. The 33-city tour is still not sold out, despite a deal with Groupon to sell tickets in more than half the concert cities at 50 percent off. Even Britney, it seems, is not immune to the struggling economy. (Last summer alone, revenue for the top 100 tours was down 13 percent, according to USA Today.)

Fans that do spring for the lower-price $30 tickets, or the full-price tickets, which start at $59 and up, will get to watch the "Till the World Ends" singer dancing and, yes, mostly lip-synching to all her songs. The set includes "Toxic," "3," "Oops! ... I Did It Again," and many more of Brit's addictive hits.

Along the way, audiences will also see the pop star change into plenty of itsy-bitsy costumes flaunting her bikini-ready body. She dons everything from embellished denim shorts and a tiny top while posing on a motorcycle to a white one-piece with jewels under a matching hat and shades.

Whether you decide Britney's worth the money or not, check out some of the ensembles that the star wears onstage!

More Celebrity Features on Yahoo!:
Photos: 2011 Billboard Music Awards
Photos: Britney Goes 'Southern Style' in Beverly Hills
Britney: 'I'm Like Everybody Else'

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