The Zorro pair is at it again. Plus: Madonna, Paris Hilton, Kirsten Dunst and more

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MISSION: TINKERBELL

Paris Hilton posts signs Tuesday around her Los Angeles neighborhood offering a $5,000 reward for the return of her beloved Chihuahua Tinkerbell. The pink poster board did the trick: The pup was reunited with the heiress soon afterward, PEOPLE confirmed.