Heyyyyyyy, sexy lady!

Britney Spears is the latest star to embrace the Internet sensation known as Psy and his energetic, dance-filled "Gangnam Style" music video.

The new judge of "The X Factor" had tweeted about wanting to learn the South Korean pop star's moves ... and on today's episode of "The Ellen DeGeneres Show," Ellen makes it happen!

Check out the clip above to see how she does -- while Brit gives it a good try, we think her super-tight dress may have hindered her dancing abilities.

While on the show, Britney also revealed her doubts about joining the show.

"I was really nervous. You have all these people behind you and you know they’re rooting you on," Spears tells Ellen. "It's really exciting, electric thing to do. But you know after we got out there and the cast is amazing. Demi and L.A. are great. And we had fun. We had a lot of fun."

Britney and Simon Cowell's full interview with Ellen airs today. "The X Factor" kicks off tomorrow night!

And be sure to click here to download your own copy of the complete toofab Fall TV calendar! You'll thank us later.

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