A Britney Spears Song For Every Mood

Britney Spears is 30 today! From "Baby One More Time" all the way up to her latest album Femme Fatale, Britney's music is the soundtrack to our lives. We can't help but feel like we've grown up with Miss Spears. And whether you're feeling down and out or ready to party, there's a Britney song for every occasion. In celebration of Britney on this happy birthday, we've matched up 10 of her biggest hits with the mood they match. Happy birthday, Britney!