plays ringmaster while performing "Circus," the opening song on the first leg of her 32-city tour. There to cheer her on at the packed 18,000-seat venue were her parents, Jamie and Lynne, sons Jayden James, 2, and Sean Preston, 3, and a few pals from her hometown, Kentwood, La. "Kevin [Federline] was there to support her, too," says a source. "She just nailed it."
Canadian designers Dean and Dan Caten of DSquared2 wanted "to create something much more provoking and indecent" for Britney's circus-themed costumes. The singer donned bondage-style police garb for "Womanizer," harem wear for "Me Against the Music" and a sheer number (left) the Catens described as "primal."