Get the hottest celebrity news in pictures, including Mary-Kate Olsen, Prince Harry, the Hiltons and more. By Janice Morris

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RICHEST BIRTHDAY GIRL

Nicky Hilton (left) can finally join sister Paris, 23, at the bar: The younger heiress, who's been working out a separation agreement with husband Todd Meister, marked her 21st birthday with a weekend-long bash in Las Vegas – the site of her quickie wedding two months ago. Now that she's of age, expect Nicky to party at Club Paris, an Orlando nightspot named for her sister and set to open on New Year's Eve.