It's Britney's Legs, Y'all!

Damn - our girl Brit must be eating her Wheaties every morning!

We caught up with the pop princess at the Millenium dance studio again, sporting two different tops (on her way in and out), not to mention those muscular thighs!

Britney was with Robin Antin, creator of and choreographer for The Pussycat Dolls, who - according to our photogs on the scene - is said to be working with Brit on her latest music video. And from the look of Britney's legs, she's working hard!

Jason Trawick must've been impressed on their date night!