Move over Kate Middleton, your little sis Pippa is stealing the spotlight!

Music mogul/superstar Usher has just revealed he wants to feature Pippa Middleton's "perfect bum" in his upcoming lingerie line!

Usher is releasing his first line of sexy undies this summer, and he gushed to Britain's Look magazine he wants Duchess Catherine's little sister to be the face of his new line.

The OMG singer confessed:

    "I don't think there's a more beautiful, more stunning, more talked-about woman in the world at the moment. I'm going to be approaching her in the next few weeks and setting up a meeting this summer."

What would the Queen say?

Usher went on to express: "The great thing about her is that she would be a global brand. Everybody knows her now, she would be perfect. I am sure everybody is trying to sign her up and she won't be cheap, but she has the looks and the popularity to really establish a new product."

Get in line, Usher. Miss Middleton doesn't have a Facebook page dedicated to her perfect booty for nothin’!