Diddy at the Borgata Hotel Casino & Spa’s Club mur.mur in Atlantic City on Monday night for the official launch party for his latest album “Last Train to Paris.”  After performing new songs and partying the night away, Diddy woke bright and early on Tuesday to attend a toy drive to help collect new, unwrapped toys for children in need.

John Krasinski and Padma Lakshmi played charades for LAByrinth Theater event sponsored by Mike’s Hard Punch in NYC on Monday night.

Dr. Phil hosting an intimate holiday dinner at David Foster’s Malibu Estate on Monday night for some of his closest friends including the Food Network’s Cat Cora, Andrea Bocelli and Natalie Cole. Cora treated the guests to a spectacular selection of deserts featuring Edward Marc Chocolates. Amongst the assortment - Italian chocolate cake in honor of Andrea Boccelli.

Michael Bay dining at Japonais in Chicago with 8 other men and conducting what seemed to be a very serious production meeting on Tuesday. The entire party all stuck to water and ate an enormous variety of menu items.

Kim Kardashian sporting the Tide "Loads Of Hope" vintage T-Shirt, where proceeds go to U.S. families affected by natural disaster, while shopping for winter must-haves with her sister Khloe at the new American Eagle Times Square Flagship Store in NYC on Tuesday.

Jermaine Jackson and P. Diddys kids, (JerMajesty & Jafaar Jackson, and Quincy & Christian Combs) arriving together to celebrate the unveiling of The Official Michael Jackson Opus Tuesday night at the Luxe Hotel in Bel Air.

Jesse Metcalf hanging out with his stylist Chase Kusero at the Chris McMillan Holiday party in West Hollywood on Tuesday night, sipping on Redleaf water, and noshing on Pinches Tacos carne Asada tacos.

90210's Annalynne McCord continuing her charity work by attending PRVCY's Premium's event on Tuesday at Hollywood's Beso Restaurant to celebrate the launch of PRVCY's book - Lives Inspired, featuring portraits of cancer survivors with 25% of proceeds to go to various breast cancer awareness organizations.

Justin Timberlake, on break from filming, The Social Network, flying in from Los Angeles to NYC on Tuesday night to support friend and collaborator Timbaland on the release of his new album Shock Value II. Other guests such as Brett Ratner, Jimmy Lovine, Jimmy Choos, Tamara Mellon and Mets center fielder, Carlos Beltranwas sipped Neuro Beverages and partied until the wee hours at the NYC hotspot Hudson Terrace.

Jessica Biel, Lupe Fiasco, Isabel Lucas, Justin Timberlake, Zach Braff, Pharell Williams, JC Chasez, JoJo and James Van Der Beek coming together to celebrate the upcoming SUMMIT ON THE SUMMIT climb of Tanzania’s Mt. Kilimanjaro with a kick-off party at Voyeur in West Hollywood on Wednesday night.

Jennifer Love Hewitt and beau Jamie Kennedy joining Carmen Electra, Paris & Nicky Hilton and Melissa Joan Hart for the special presentation of the Fraggle Rock Volkswagon Routan at the Fraggle Rock Clothing & Costume Jewelry Collection party at Kitson in Los Angeles on Wednesday.

Katy Perry and Gerard Butler making a late night stop at NYLON Guys & AllSaints Clothing celebration for the winter issue launch with cover star Jared Leto and Thirty Seconds to Mars at Teddy's in Hollywood on Wednesday night.

Jennifer Esposito returning to her alma mater, The Lee Strasberg Theatre & Film Institute New York, to teach a one-day acting class on Thursday.

Katharine McPhee at the Forgotten Harvest Food Bank in Detroit on Thursday celebrating Chase's $5 million donation to Feeding America.

Stan Lee, Baron Davis and Chris Pine at The Gersh Agency's special cocktail reception at West Hollywood's Sunset Towers on Thursday to introduce the industry to entrepreneur, philanthropist and mother of 5 Cynthia Stafford’s new feature film production company Queen Nefertari Productions.

New Moon star Kiowa Gordon at the Rebecca Jewelry Fundraiser for the American Heart Association at Fred Segal in Santa Monica on Thursday.

Stephen Colbert dinING at Rush Street hot spot, Le Colonial IN Chicago on Friday night while in town for the Second City 50th anniversary.

Linkin Park lead singer Chester Bennington dining with his family inside Pink Taco at Hard Rock Hotel & Casino on Friday night before performing with his side-project, Dead by Sunrise, during Holiday Havoc inside The Joint later in the evening.

Willie Nelson and B.B King at the opening of B.B King's Blues Club inside The Mirage on Friday night.

Camp Freddy (Dave Navarro, Matt Sorum, Billy Morrison, Chris Chaney, Donovan Leitch) joined by rock legends Billy Gibbons of ZZ Top, Steve Jones of the Sex Pistols, Billy Duffy of The Cult and Steve Stevens of Billy Idol on Dec 11 at the Onitsuka Tiger sponsored concert series at The Roxy in West Hollywood on Friday night.

Lisa Marie Presley at Wasted Space inside The Hard Rock in Vegas on Saturday night, along with Randy Jackson to attend the concert MUSE in the new Joint Concert Venue.

Audrina Patridge up at The Very Very Green Room by Kettle One Vodka in North Hollywood on Saturday night hanging with girlfriends at the KROQ Acoustic Christmas show.

Adam Lambert mingling backstage of Jingle Ball in Miami on Saturday night sipping TY KU Soju.  Adam was presenting so didn't have a dressing room so he claimed the green room as his!

Kelly Clarkson in her vintage Tide "Loads of Hope" tee and a santa hat lending a hand at the Tide "Loads of Hope" truck in New Orleans on Saturday.

Kris Allen and Justin Bieber attempting to solve   Hasbro’s new Rubik’s 360 puzzle at the Jingle Ball at Madison Square Garden NYC on Saturday.

Jessica Lowndes kickingoff the holiday season at the For Joseph’s Holiday sponsored by Elle Magazine at Bettina Duncan, Fred Segal on Saturday.

Alex RodriguezKelly Osbourne and fiancé Luke Worrall, David CassidyWilmer Valderrama and Victoria Secret Angels Alessandra Ambrosio and Doutzen Kroes hanging out under the stars at the Armani Exchange “Cool Shades of Style” dinner at the Solarium atop the Delano Hotel in Miami on Saturday night.

Elisabeth Hasselbeck stopping by Old Navy’s winter wonderland weekend at The Pond at Bryant Park to spread some holiday cheer with friends over the weekend.

Taylor Swift celebrating her 20th Birthday by throwing a party in Nashville on Sunday complete with CRUMBS mini cupcakes and a vanilla cake with “Happy Birthday Taylor” written on it.

The GAP Cheer Bus pulling up to Tori Spelling & Dean McDermott’s Los Angeles home on Monday afternoon  to teach the family, including their children Liam and Stella  the moose dance from the GAP commercial.

Robin Thicke celebrating the release of his new album, "Sex Therapy” at BUTTER in NYC on Monday night alongside pals Jay-Z, BeyonceLeighton MeesterJohn LegendMichelle Trachtenberg, Usher, Sebastian Stan and Tyson Beckford.