Britney Spears is speaking out on Instagram after she was photographed exiting the Chateau Marmont in Los Angeles barefoot around the same time an ambulance was dispatched to the hotel.

Her followers were then treated to a costume change when Spears was later seen barefoot while wearing a similar white top and blue patterned string bikini bottoms. She wrote in her caption: ...

Longtime friends Spears and Madonna, who collaborated on the 2003 hit "Me Against the Music," also shared a sweet hug on the dance floor during the reception. A barefoot Spears looked elated to ...