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In case you missed it over the weekend, here's Britney, showing off her toned legs in short-shorts at Millenium Saturday.

And even though she doesn't look too happy (kind of hard to be happy when someone else is in control of your life!), here's one thing to smile about: famed Pussycat Dolls/Girlicious founder Robin Antin was with Brit working on some new choreography for her new video!

Now THAT'S hot!