Britney Spears poses in nothing but a bra and underwear after

The “Circus” singer’s video comes one day after she celebrated her birthday alongside her mother, Lynne, and her brother, Bryan.

Britney Spears ditches bikini top to strike poses on the beach

Britney Spears Strips Down to Her Underwear -- and Teases New

Britney Spears poses in nothing but a bra and underwear after

Britney Spears's Weird, Sad Lingerie Show - Racked

Britney Spears fans fear singer is battling mental health

Britney Spears concerns fans as she dances in her underwear with

Britney Spears shares racy video in just her underwear as she

Britney Spears teases fans in lingerie in sneak preview for

Britney Spears poses in nothing but a bra and underwear after celebrating 42nd birthday

Britney Spears' 'bizarre' video sparks worried fans to ask why