Feb 2, 2006, 22:47 GMT
Nicky Hilton has reportedly taken a swipe at 'O.C.' star Mischa Barton - branding her a 'fat pig'.
The hotel heiress - sister of socialite Paris - was apparently horrified to see the stunning actress at a star-studded bash at the swanky Regent Beverly Wiltshire on Saturday night (28.01.06).
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