Pop Tarts

Pop Tarts Scene & Herd: Celebrity Sightings

Kate Hudson toasting to Barbie’s edgy makeover with TY KU sake and chocolates at a private party in Miami Beach.

Carmen Electra drinking Electra Ice at the Via dei Mille pool party at the Sagamore Hotel in Miami.

Pamela Anderson noshing on the patio at Sushi Roku on 3rd Street in LA with a group of eight.

Kourtney Kardashian donning an INCA bikini from the flagship store in Miami Beach.

Leona Lewis celebrating her birthday with family and good friend Bijou Phillips at PURE nightclub in Vegas. Other celebs at the hotspot included Danny Masterson, Ryan Cabrera (sans rumored girlfriend Audrina Patridge) and New York Giants player Brandon Jacobs.

Adrian Grenier picking up Carerra sunglasses and American Apparel t-shirts and tanks for his girlfriend at The Carerra Escape in Austin for SXSW.

Scott Disick at the Grand Opening of his club (yes he is actually working!) MIA at Biscayne in Miami.

Paris Hilton, Mischa Barton, and Lindsay Lohan at the party for Nylon Magazine's 11th Anniversary issue (featuring cover girl Zoe Saldana) at LA hot spot Trousdale.

Tom Cruise, Katie Holmes and son Connor hanging out backstage with Slash before his surprise performance at the Black Eyed Peas concert in Los Angeles. The trio also had primo seats and danced during the show. Meanwhile the BEP boys partied the night away at the Bacardi VIP post party across the street at Club Nokia.

Marcia Cross celebrating her birthday at Venus Pool Club and at PURE Nightclub in Vegas later that evening.  Also at Venus Pool Club Saturday afternoon were country crooner Jessie James (who had her birthday party at Coyote) and Reggie Bush, who were spotted chatting in a VIP cabana. Meanwhile Brooke Hogan was also spotted partying near Cross at PURE.

Kara DioGuardi performing her first-ever concert at BORGATA HOTEL CASINO & SPA’s Music Box theater in Atlantic City, NJ to sold-out crowds and rave reviews.

Rooney Mara, Tom Everett Scott, Tatiana von Furstenberg (director), Diane von Furstenberg and Miss USA at the red carpet premiere for “Tanner Hall” at the 15th Anniversary of the Gen Art Film Festival presented by Acura at the Visual Arts Theatre in NYC.

Mel B, Audrina Patridge, and Shannen Doherty enjoying the Alize-made

Perez Punch at Paramount Studios.

James Van Der Beek at h.wood’s Tea Room at the Hollywood hotspot’s special residency this week in New York with his girlfriend,

consultant Kim Brook.  James is in New York shooting NBC’s "Mercy" with Michelle Trachtenberg.

Dolly Parton, Lionel Richie, Smokey Robinson, Wynnona, The Oak Ridge Boys, Alison Krauss, Sheena Easton and Chris Isaak at MGM Grand at Foxwoods for "Kenny Rogers: The First 50 Years," a made-for-television special that filmed in the property’s MGM Grand Theater.

"Real Housewife" Bethenny Frankel having dinner with her husband at Buddakan at The Pier Shops at Caesars in Atlantic City.

Justin Bieber ordering a Yogen Früz chai latte flavor yogurt in Los Angeles.

Paris Hilton and Reggie Bush descending on MGM Grand’s WET REPUBLIC in Las Vegas for a friend’s birthday absh. They didn’t come together, and although they partied in the same bungalow overlooking the poolside club scene, the duo intentionally kept their distance from one another.

Gavin Rossdale & Gwen Stefani, Tobey Maguire & Jennifer Meyer, David Arquette, Jamie Foxx, Barbara Streisand, Molly Sims, Goldie Hawn, Bryce Dallas Howard, Oliver Hudson, and Donald Sutherland chomping on CRUMBS cupcakes at Ron Meyer's party in Malibu.

Serena Williams and New Orleans Saints star Jeremy Shockey enjoying Meatballs with a group of friends at Macaluso's & Co. Italian-American Market in Miami Beach. The pair giggled over a gossip column mentioning the tennis heavyweight.

Benji Madden & Holly Madison holding hands while leaving the Hard Rock Hotel & Casino after partying together at Wasted Space for a few hours.

Audrina Patridge overheard talking about how she wants to be a DJ while hosting a pool party at MGM Grand's WET REPUBLIC.

Lebron James, Jimmy Iovine, and Dr. Dre at Fenway Park as Dre & Jimmy launched their Red Sox edition of "Beats By Dr. Dre."

Josh Duhamel sipping Vita Coco while grocery shopping solo at Vicente Foods in Los Angeles.

The Bachelor's Vienna helping her man Jake chose tees and woven shirts from English Laundry.

Diddy's son Christian Combs celebrating his 12th birthday with a three day Vegas getaway, starting off at Lavo Italian Restaurant inside The Palazzo. Arriving in style in a black tour bus straight from Los Angeles, the group included other celeb royalty spawn, including Tyson Beckford's son Jordan, Faith Evans’ son Josh, and Master P's son

Hercy, along with Christian’s brothers Justin and Quincy.  Mom Kim Porter joined as well, keeping a watchful eye on the group.

Rachel Bilson, Tom Sturridge, Jane Seymour, and Blythe Danner at the premiere of “Waiting for Forever” at the 15th Anniversary of the Gen Art Film Festival presented by Acura in NYC.

Whitney Port wearing blue DKNY Smoothies while running errands in NYC.

Tori Spelling and Dean McDermott spending some quality time with their

children at Southern Hospitality BBQ in New York City.

Jennifer Hudson surprising fans with a special appearance at the Boys & Girls Club of America in Chicago, where she used to be a member.

Kelly Bensimon and Adrienne Bailon coming out to support the debut of the 2011 Volkswagen Touareg Hybrid in New York. Bensimon was also spotted (not with rumored beau chef Sam Talbot) at the launch of the TRIA Beauty Lounge in NYC, but with another mystery man...

Mena Suvari, Kate Mara, and Krysten Ritter, along with her boyfriend, Ivan Sergei, celebrated Treesje's Spring 2010 Collection at Saks Fifth Avenue in Beverly Hills with designers Laura Darrah and Sheila Nazarian.

Forest Whitaker attending Disney’s THE LION KING at Mandalay Bay with his wife Keisha Nash and daughters, Sonnet and True.

Shia LaBeouf with a bottle of chocolate-flavored Muscle Milk, giving his girlfriend Carey Mulligan a kiss in LA.

Melissa Rycroft-Strickland and husband Tye Strickland heading to Sin City to celebrate Tye's 29th birthday at the luxurious Palazzo Resort Hotel Casino.

Demi Moore, Ashton Kutcher, and Rumer Willis celebrating Moore's new film "The Joneses" with a premiere after-party at Playhouse in Hollywood. Co-star David Duchovny was also in attendance at his table next to Moore most of the night.   Other stars from the film such as Kim Zolciak, Ben Hollingsworth, Lauren Hutton, and Glenne Headly also

mingled about.

John Malkovich retreating to Whiskey Blue in the W Hotel-New Orleans for a glass of pinot noir after the wrap party for his new action comedy, Red, starring Bruce Willis and Morgan Freeman.

Kristen Johnston buying JolieMD skincare at C.O. Bigelow in New York.

Who got hot and sweaty in the Nautica South Beach Triathlon to raise money for St. Jude Children's Hospital?

Eliza Dushku (02:45:42) stuck alongside boyfriend and former NBA player, Rick Fox (02:45:42) throughout the whole race; NBC’s The Biggest Loser winner Ali Vincent (02:17:11); The Bold and The Beautiful’s Heather Tom (02:05:43); The Bachelor’s, Andy Baldwin (01:35:02)

Tiger Woods mistress Jamie Jungers at a Hollywood party for 666 vodka.

Gavin Rossdale, Gwen Stefani and Kate Beckinsale at the Conde Nast Traveler "Hot List" party in Las Vegas.

Hollie McKay has been a FoxNews.com staff reporter since 2007. She has reported extensively from the Middle East on the rise and fall of terrorist groups such as ISIS in Iraq. Follow her on twitter at @holliesmckay