Britney Spears Dancing to Justin Timberlake and Jay-Z's 'Holy Grail' Is Perfection | Billboard News

"Danced in my black neck last week to HOLY GRAIL !!!! I KNOW ... turtle necks are SO ME !!!! @justintimberlake," Britney captioned the clip, in which she executes some graceful spins, booty shakes, body rolls and lots of dramatic hand gestures.

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