Britney Spears Jason Trawick blonde nail biter sweatpants gym

Britney Spears Jason Trawick blonde nail biter sweatpants gym

Who knew the pop princess adored Will Smith's daughter and her new single so much?

Decked out in casual sweats, 28-year-old Britney Spears - along with her boyfriend Jason Trawick - worked on their fitness together at a Beverly Hills gym yesterday afternoon...

Meanwhile, our girl Brit Tweeted "Have you guys seen Will Smith’s daughter @OfficialWillow’s video? SOOOO CUTE!!!!"

Guess that means Ms. Spears is a big fan of whipping her hair, too!