So Prince William, Paris and Xtina Walk Into a Bar…

It’s no secret that young British royals such as Prince William like to party at East London nightspot Whisky Mist.

So it makes sense, then, that Christina Aguilera and husband Jordan Bratman would want to hit up the joint while on her colorful jaunt through London.

But throw Paris Hilton into the mix, and it’s recipe for scandal!

William—sans girlfriend Kate Middleton—and his brother Prince Harry were hanging out and drinking vodka cocktails, reports the Daily Telegraph, when William approached Aguilera and her husband.

A witness claims the prince and the pop star sat close “swapping numbers and flirting outrageously.” Uh, with her husband sitting right there? Well, okay…

Enter Hilton. She and William were “later seen exchanging numbers and he remained at her side for much of the night.”

Paris then was quoted saying, “Don’t you love the Princes? They are so hot. I just had to say hi.”

Guess having a boyfriend or a girlfriend—or a husbandreally doesn’t matter to these people. And apparently what happens in London stays in London.