Sean Preston, Jayden James Federline Get "Toxic"

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Earlier today, we told you how Britney Spears kicked off the European leg of her Circus tour with a hot London concert. Well, a couple of aspiring backup dancers were not featured during the show, but displayed some sick moves nonetheless.

Britney just posted some unbelievably cute footage of her kids, Sean Preston and Jayden James Federline, dancing to her music during a break on her tour.

Their song of choice? "Toxic." Check out the video of them gettin' down below!

And pray for them.

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