Britney Spears performed her HBO special from Las Vegas in 2001 from the MGM Grand as part of her Dream Within A Dream Tour.
Britney married childhood friend Jason Alexander at the Little White Chapel in Las Vegas in January 2004...and got it annulled 55 hours later, unlike Ross Gellar.
You definitely remember Brit's "Gimme More" performance at the MTV VMA's in 2007, but did you know that took place in Las Vegas too? Yup.
And Britney's no stranger to Sin City, as she's spent tons of time by the pool at the Palms hotel.