Spotted!

Sean Diddy Combs hosting a post-fight party at Eva Longoria Parker's Beso restaurant and Eve nightclub in Crystals at CityCenter in Las Vegas.

Hilary Duff, Hill Harper and Dennis Quaid among the talent on the links at The Third Annual George Lopez Celebrity Golf Classic and 2010 Audi quattro Cup presented by George Lopez, Hard Rock International and The Seminole Tribe of Florida to launch The Ann and George Lopez Foundation.

Selma Blair and Abbie Cornish at the CHANEL Tribeca Film Festival Artist Dinner at the Odeon in NYC.

Cheryl Burke celebrating her birthday at Phillippe in West Hollywood.

Bridget Marquardt hosting “Bunny Bash” at Angels Rock Bar and Hotel during Fourth Street Live!’s “Derby Week” in KY.

Joe Jonas and Demi Lovato having dinner at The Cheesecake Factory at The Grove in L.A.

Sean “P. Diddy” Combs hosting an after party for the Mayweather/Mosley fight at Eve Nightclub in Las Vegas.

James Caan telling OK! he stays young by hanging out with his son Scott Caan at the premiere of Mercy, written and produced by Scott and starring both father and son, at The Egyptian Theatre in L.A.

James Franco snapping photos with a Polaroid 300 at the Tribeca Film Festival after party for his directorial debut Saturday Night at 48 Lounge in New York City.

Adrian Grenier speaking on behalf of The Creative Coalition at the non-profit’s, "Art & Soul: A Celebration of the American Spirit" event sponsored by Martini & Rossi in Washington DC.

Josh Brolin’s Q&A this past Saturday at the Tribeca Film Festival following a screening of The Weinstein Co’s upcoming release of The Tillman Story.

Sacha Baron Cohen at 944 and Absolut’s soiree to celebrate Sarah Silverman’s new book at Trousdale in L.A.

Twilight’s Ashley Greene snorkeling with family while on vacation with family at Gansevoort Hotel in Turks & Caicos.

Drake jumping on stage at hanging out at NYC hotspot Quo.

Real Housewives of NYC Kelly Bensimon celebrating her 42nd birthday at SET on South Beach after dining on calamari, dumplings and chicken satay at Philippe for dinner.

Gwen Stefani getting a Mani/Pedi at Planet Nails in Los Angeles.

George Lopez having dinner at Philippe Chow in NYC.

Carmen Electra celebrating her birthday at MGM Grand’s Wet Republic pool.

Stephanie Pratt hosts Stingaree in San Diego.

Governor Arnold Schwarzenegger and wife Maria Shriver dining with two of their children at Strip House inside Planet Hollywood Resort & Casino, Las Vegas.

Kevin Dillon at Vanity in the Hard Rock Hotel & Casino.

Lisa Kudrow having a late lunch at Society Cafe Encore in Las Vegas.

Renee Zellweger brunching at LGO in Santa Monica.

Mario Lopez hosting the party at Angels Rock Bar during Fourth Street Live!’s “Derby Week” in KY.

Jennifer Garner, who teamed up with Frigidaire and Save the Children to launch “Make Time for Snack Time”, a virtual campaign designed to get kids snacking smart, hosting an event for the initiative in NYC.  Frigidaire will donate $1 to Save the Children’s U.S. Programs.

Nicole Scherzinger shopping at the new Armani Exchange store on Robertson Blvd in L.A.

Paris Hilton stopping by an L.A. showroom where she left with various French Connection and Armani Exchange clothes, an Ann Taylor gold engraved bib necklace and Jules Smith's Queen Bee Knuckle ring.

Bethenny Frankel at YogaWorks SoHo in NYC.

Zoe Saldana arrives in Neil Lane Jewelry at the Costume Institute Gala Benefit.  She wore a wide gold & lapis cuff and a gold & sapphire cocktail ring.

Will Smith, Mark Wahlberg, Jay Z and Boxer Andre Bert poolside at Rehab in Las Vegas after the Mayweather/Mosley fight.

LeAnn Rimes trying on Elizabeth and James shoes at Madison Westlake before heading to The Grill on the Alley for dinner.

America Ferrera practicing her lines backstage at the Tribeca Film Festival Awards at W Union Square.

Diane Lane arrives at the Secretariat Stars Kentucky Derby Parade wearing Neil Lane diamond ball drop earrings and a diamond & platinum ring.

Chelsea Handler arrives at the White House Correspondents Association Dinner wearing Neil Lane Jewelry.