Spotted!

On June 6, Fall Out Boy bassist Pete Wentz, along with wife Ashlee Simpson and a small group of friends, celebrated his 30th birthday with a Vegas-style bash at The Bank Nightclub at Bellagio Hotel in Las Vegas. Pete and Ashlee enjoyed a dinner at Yellowtail before heading over to The Bank where over 1000 clubgoers sang happy birthday and helped him blow out his candles. Pete’s cake was shaped as an oversized number “30” and adorned with a photo of Ashlee and Bronx.

Chris Brown at Blade Lounge in Miami where friends tell OK! "He was very relaxed, laughing and telling stories to a group of friends. He had a fleet of secuirty guards with him." He went to LIV nightclub afterward with friends including Khloe Kardashian.

Caroline Kennedy and Bethenny Frankel attended the first annual Literacy Associates benefit at NYC nightclub Tenjune.

Owen Wilson at a photo exhibit by Deborah Anderson, featuring wild horses and models of Native American heritage wearing timeless Morgane Le Fay, held at the new Morgane Le Fay store at the Malibu Mart.

It was date night in Hollywood at Activision’s Debut of DJ Hero as Heroes star Ali Larter and Amy Smart both brought their fiancés to catch the Jay Z and Eminem performance. Matthew McConaughey relaxed with Camila Alves and Ryan Philippe watched with Abbie Cornish.

Dancing With the Stars' Derek Hough and Mark Ballas celebrated their joint birthday parties by blowing out candles of a life size trophy cake created by the Bellagio Hotel chef, Jean-Philippe at The Bank Nightclub. Mark's girlfriend joined Mark in the celebration while Derek stayed close to his mom showing her his dance moves.

E!’s Cat Sadler sipping TY KU as Joel Madden spun Bohemian Rhapsody to close out the party at the Soffer Ari Flagship Launch on Thursday in L.A.

Pete Wentz signing autographs at the Michael Stars booth at The Time for Heros Carnival to benefit the Elizabeth Glaser Pediatric AIDS Foundation. Nearby Lauren “Lo” Bosworth and Lauren “LC” Conrad also were seen sipping illy issimo caffe.

Kellan Lutz sipping Mighty Leaf Tea at the Young Hollywood Awards after party.

The Hangover's Heather Graham overheard at at the 6th Anniversary fete for Niche Media's Vegas magazine at Pure Nightclub in Caesars Palace telling Robin Leach that she and her director/boyfriend Yaniv Raz have plunged into the next phase of their relationship by moving in with each other and suggesting that wedding bells might be soon to follow.

Mary J. Blige dancing on the tables at Butter Restaurant on June 1, while Paris Hilton and Doug Reinhardt cuddled at the next table.

Denise Richards, Jaime Pressly, Ali Landry, Ashlee Simpson-Wentz, Kristin Cavallari, Shenae Grimes, Virginia Madsen, Terri Seymour, Garcelle Beauvais, Brooke Burke, Stephanie Pratt, Daisy Fuentes, Constance Marie, Lacey Schwimmer, Ryan Newman and many other stars channeled their inner artists at the 77kids by american eagle Denim Decorating booth at the annual Elizabeth Glaser Pediatric Aids Foundation "A Time for Heroes" Celebrity Charity Picnic. The star-studded event at Brentwood's Wadsworth Great Lawn in L.A. boasted a special live performance by Disney superstar Miley Cyrus and interactive activities for over 80 celebrities and their families.

Ashlee Simpson drinking KARMA California Brut at an event for "Nicole Richie's House of Harlow 1960 and hubby Pete Wentz Clandestine at the Boulevard 3 in L.A.

Frankie Delgado celebrating his birthday at LIV nightclub with Wilmer Valderrama.

Ben Silverman, Co-Chairman of NBC Universal Entertainment hosted a dinner for San Francisco Mayor Gavin Newsom, who recently announced his candidacy for the Governor of California at Mr. Chow in Beverly Hills. Silverman's good friends and L.A. tastemakers, Ryan Seacrest and Chelsea Handler were among those at his table on Wednesday June 3.

Kellan Lutz and Bar Refaelli sticking their nose in a jar of Tree Hut Shea Body Butter and then giggling at Hollywood Life Media's Young Hollywood Awards June 7.