Britney: "More Focused Than Ever"

Could Britney Spears be turning things around? For more than a year, the pop star's career comeback has been completely overshadowed by her personal problems — divorce, custody battles, public breakdowns, rehab and hospital visits — but those who have watched the singer rehearse for her latest video tell OK! that she's working harder than ever.

"She's incredibly focused now," explains Robert Baker, owner of Millennium Dance Studios, where Brit has been refining her dance moves for the upcoming video shoot for her song "Hot as Ice." Baker has been in the studio with the 26-year-old mother of two during her rehearsals and says that the woman he's seen kicking up her heels is a "whole new Britney."

The dance routine for "Hot as Ice" will be one of Britney's famous chair numbers — the kind she made famous in her video for her hit "Stronger." And it's rumored that the now-infamous "nip-slip" caught on camera during her rehearsal Sunday night might actually play a part in the "Hot as Ice" video — though it's unclear how much skin Brit intends on showing.

Of course, Sunday night's dance rehearsal wasn't Britney's only sexy stopover of the evening. Before heading to rehearsal the singer and pal Sam Lutfi had stopped by the Hustler Store on L.A.'s Sunset Strip, where unlike past visits when Brit picked up revealing clothes, she left with only a necklace — and a sandwich.

Following the rehearsal, Brit and Sam joined her cousin Alli Sims and a friend for a late-night showing of 27 Dresses. Eyewitnesses who spotted Britney leaving the theater tell OK! that the singer was teary-eyed as she left the theater.