LOS ANGELES, Calif. -- Friday, October 30, in NYC: Halle Berry, partner Gabriel Aubry and daughter Nahla out and about on the streets of Manhattan.

Saturday, October 31, in NYC: "30 Rock" star Katrina Bowden partying at JoonBug.com's Halloween Bash at Gaustinvo's, wearing a "Little White Lie" costume she made herself. Fergie, Kylie Minogue and Marc Jacobs at Wilhelmina Models president Sean Patterson's private party at his apartment in Tribeca. The group continued on later in the night at Club 57 in midtown.

VIEW THE PHOTOS: Week's Best Star Sightings: October 31 - November 6, 2009

And In LA: Heidi Klum and husband Seal in crow costumes for the model's 10th annual Halloween bash in West Hollywood, joined by Paris Hilton and boyfriend Doug Reinhardt in fairy costumes and Kelly Osbourne and fiance Luke Worrall as eggs and bacon. Reichen Lehmkuhl throwing a private event at Haunted Palihouse's rooftop party.

Sunday, November 1, in LA: A casual Calista Flockhart and her son at the toy department of Landis General Store on Larchmont Blvd... Katie Cassidy enjoying a lazy Sunday at Coffee Bean in Studio City... Chloe Sevigny bringing her own shopping bag to Gelson's in Silver Lake.

VIEW THE PHOTOS: The Latest Star Sightings

Monday, November 2, in LA: Cash-strapped star Nicolas Cage flying business class from LAX to Munich.

Tuesday, November 3, in LA: No Doubt bassist Tony Kanal on his way to Devo's headlining performance at the Music Box at Fonda.

Wednesday, November 4, in LA: Paris Hilton getting an early start on her workout with a morning at Equinox West Hollywood... Felicity Huffman on her cell phone in Toluca Lake... "Dancing With the Stars" pros Maksim Chmerkovskiy and Tony Dovolani hanging at the VIP section of MyHouse in Hollywood for the Verizon Wireless Samsung Rogue event..."The Hills" star Jayde Nicole, running solo without boyfriend Brody Jenner.

VIEW THE PHOTOS: Hot Shots Of The 'New Moon' Werewolves

And in NYC: The New York Yankees celebrating their World Series victory at Scott Sartiano's 1OAK.

Thursday, November 5, in LA: Diane Keaton in one of her signature outfits and very high heels, racing her kid down Robertson Blvd... VH1 star Tiffany "New York" Pollard at O-Bar in West Hollywood for promoter Tom Whitman's 5th anniversary SMACK party, with about five girlfriends.

And in Las Vegas: Enrique Iglesias sipping Grey Goose cocktails at LAVO after the Latin Grammy Awards.

And in NYC: Ricky Gervais making a surprise appearance -- with Elmo! -- at the New York Comedy Festival, playing to a sold-out crowd at Carnegie Hall.

Related Content from AccessHollywood.com:
PLAY IT NOW: Access Extended Part II: Kristen Stewart On Hot Shirtless Co-Stars & Marrying Robert Vs. Taylor
PLAY IT NOW: T.G.I.F. - Does Brad Pitt Blame The Paparazzi For His Motorcycle Accident? (November 4, 2009)

MORE ACCESS ON THESE TOPICS: Weeks Best - Star Sightings - Celebrities