Britney Spears paid tribute to her boyfriend Sam Asghari on his 27th birthday with a nod to her past.On Thursday the 39-year-old hitmaker — who has been a trending topic in recent weeks — shared a video to Instagram of she and Asghari doing a rendition of her song Toxic while in the shower.A duet of sorts, the robe-clad couple separately danced in her glass shower, using their mouths to hit the last note of her song, Spears asking, 'Who did it better?' Toxic duet: Britney Spears, 39, pays tribute to her boyfriend Sam Asghari on his 27th birthday with a shower rendition of her hit song Toxic Shower shenanigans: The robe-clad couple separately danced in her glass shower, using their mouths to hit the last note of her song, Spears asking, 'Who.
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