The Music and Lyrics star embraces her pet cause in Malibu. Plus: Britney, Jen & Sheryl, Taylor and more

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WHO'S THE BOSS?

Also in New Orleans: costumed Sopranos star James Gandolfini, who ruled the day Sunday during the Krewe of Bacchus parade during the Mardi Gras celebrations. The actor tossed commemorative coins featuring his face into the crowd.