The whole Spears-Federline gang came together yesterday to cheer on Sean Preston at his Little League game in LA. Britney, who hosted KISS FM's Wango Tango concert alongside Ryan Seacrest on Saturday, traded her tight Herve Leger party dress for casual sweats during the family day. She was joined by boyfriend Jason Trawick to sit behind the plate, while Kevin Federline coached the team and his girlfriend, Victoria Prince, played with Jayden. Britney Spears is on the June cover of Harper's Bazaar and chatted about her upcoming North American tour in the accompanying interview. Britney spoke about how being a mom has affected her career decisions, but she went on Twitter to reveal that her favorite single from new album Femme Fatale is the new tune "I Wanna Go."