Gangnam Style: Britney Spears, 'X-Factor USA' Judge Learns Dance On 'Ellen' (VIDEO)

Britney Spears' wish came true when she met Korean rapper Psy and he taught her the popular dance moves from his "Gangnam Style" music video.

The "X-Factor: USA" judge tweeted she would love to "learn" from the highly charged entertainer who is a YouTube sensation.

"I am LOVING this video - so fun! Thinking that I should possibly learn the choreography. Anybody wanna teach me?," she had tweeted.

When the "Slave 4 U " singer appeared on Ellen De Generes' daytime talk show "Ellen," the comedian surprised Spears by asking Psy to come out on stage to offer the pop star a dance lesson.

View the video where Spears try to learn the Gangnam Style dance on "Ellen."

Before learning the dance moves, Spears was more serious in discussing how she went from being skeptical to excited about joining Fox's hit singing competition reality show.

"I was really nervous. You have all these people behind you and you know they're rooting you on," Spears told DeGeneres.

"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."

Spears and Simon Cowell's interviews on "Ellen" airs on Tuesday, Sept.11

"The X Factor: USA " season premiere airs on Fox on Wednesday. Sept. 12.

"Gangnam Style" is a single by South Korean rapper Psy. The music is described as "K-Pop" for Korean pop music.

To date, the music video for the hit song has garnered over 143 million views on YouTube.

The video landed on the no.1 spot of YouTube's Top 100 Music Videos of the week in August, beating Carly Rae Jepsen's "Call Me Maybe."