Britney Spears is repping all Easter egg hunters from her treadmill in a massive surprise filmed by boyfriend Sam Asghari. The 39-year-old pop princess was all smiles as she straddled a treadmill in her home gym two days ago, with the Grammy winner filmed putting a fresh spin on both her equipment and the iconic "It's Britney b-tch" phrase stemming from 2007 hit track "Gimme More." Boyfriend Sam, 27, updated his Instagram over Easter weekend with footage of his super-famous girlfriend, and it was leggy stuff. Check it out below.