Kidman gives almost-5-month-old daughter Sunday a smooch in Paris. Plus: Britney Spears, Spencer Pratt & Heidi Montag and more

'CIRCUS' PERFORMER

She's celebrating her 27th birthday under the Big Top! Britney Spears is the ringmaster in the middle of the action during her performance on Good Morning America inside the Big Apple Circus tent at New York's Lincoln Center on Tuesday. It's a big day for the singer, who also released her sixth album, Circus.