Since when is Kim Kardashian shy when put in the spotlight?

Apparently Prince is the only man who gives the 30-year-old reality star the jitters, and Kim proved that when she froze on stage during the singer's NYC concert at Madison Square Garden.

Prince goes looking for a dance partner in the crowd, and after saying Kim K may be "too sexy" to pull on stage, she goes up there wearing her trademark form-fitting dress and heels. However, after not shaking her famous rear-end to the music, Prince gets fed up and kicks her to the curb ... or in this case, back into the crowd.

Kim tweeted the following:

    "OMG Prince just pulled me up on stage!!! I'm shaking!!!! I was so nervous I froze when Prince touched me!!!!"

The curvy starlet says she went on stage later on during the show and "redeemed myself" by dancing while Prince played the piano.

You go, girl!

See which "F**k You" singer performed with Prince on stage after the jump ...