From the two Balmain celebrations on each coast to the 'Rock the Kasbah' premiere in NYC, it was a nonstop week in Hollywood.
October 25: 'The Flash' star Danielle Panabaker completed Women's Health RUN10 FEED10 Charity Race in San Francisco.
Photo: Getty Images
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October 24: Nina Dobrev dressed as Victoria Beckham and her friends went as the Spice Girls to Matthew Morrison's Halloween party sponsored by Dos Equis and Podwall Entertainment at Hyde Sunset in L.A.
Photo: Splash
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October 24: Gwen Stefani with her two oldest sons Kingston and Zuma helped out during the Feeding America Holiday Harvest event at Shawn's Pumpkin Patch in L.A.
Photo: Getty Images
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October 24: Blythe Danner and Gwyneth Paltrow made it a mother/daughter affair at the 25th annual Environmental Media Association Awards presented by Toyota and Lexus at Warner Bros. Studios in L.A.
Photo: Getty Images
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October 24: How's it hanging?! Julianne Hough had some fun in the sun with girlfriends at the Beauty Coach Retreat in Mexico at the Hard Rock Hotel Riviera Maya.
Photo: Luis Rodriguez
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October 24: Jessica Biel left husband Justin Timberlake home as she attended the EMA Awards in L.A.
Photo: Getty Images
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October 24: Keke Palmer, Lea Michele and Ryan Murphy snapped a selfie on Keke's Samsung Galaxy S6 edge+ phone during 'Scream Queens' Fanfright Fest in NYC.
Photo: Bonnie Biess/FOX
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October 24: Olivia Wilde received the Spotlight Award during the Savannah Film Festival.
Photo: Getty Images
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October 23: Cara Delevingne had enough of her shoes during Balmain's Creative Director Olivier Rousteing's 30th birthday celebration with Jessica Biel and Justin Timberlake in L.A.
Photo: Getty Images
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October 23: Kate Hudson supported pal Brian Atwood at his celebration of PUMPED hosted by Melissa McCarthy and Eric Buterbaugh in L.A.
Photo: Getty Images
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October 23: Jaime King, Jaden Smith, Kris Jenner, birthday boy Olivier Rousteing, Jada Pinkett Smith and Corey Gamble all had fun at his Beats party in L.A.
Photo: Getty Images
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October 23: Alessandra Ambrosio had a swinging good time at Balmain Creative Director Olivier Rousteing's 30th birthday bash in L.A.
Photo: Getty Images
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October 23: Kylie Jenner and Tyga were a matching duo at Olivier Rousteing's 30th birthday where they listened to songs by DJ M.O.S. and DJ Kiss.
Photo: Getty Images
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October 23: Justin Timberlake and Jessica Biel were all about the R-E-S-P-E-C-T at the GLSEN Respect Awards in Beverly Hills.
Photo: Getty Images
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October 23: Sometimes a wife just needs to make sure her hubby keeps quiet! Jessica Biel and Justin Timberlake had fun at the GLSEN Respect awards in Beverly Hills.
Photo: Getty Images
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October 22: The secret is in the mug! 'Pretty Little Liars' Ashley Benson and Shay Mitchell attended the launch party for the new Off the Menu app in L.A.
Photo: Alison Albright
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October 22: Big Sean performed during Power 105.1’s Powerhouse 2015 concert at the Barclays Center in Brooklyn, NY.
Photo: Getty Images
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October 22: Justin Timberlake and Jessica Biel had a date night in NYC at the 2015 Fashion Group International Night Of Stars Gala.
Photo: Getty Images
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October 22: Kate Walsh supported Operation Smile and Lladro's New Beginnings event where guests snacked on light bites from STK in Beverly Hills.
Photo: Alicia Bravo
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October 22: Charli XCX performed in Brooklyn in celebration of her upcoming collaboration launch with boohoo.com.
Photo: Getty Images
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October 22: Nina Agdal made her way to the Restoration Hardware unveiling of the RH Modern at RH New York, The Gallery in the Historic Flatiron District.
Photo: Getty Images
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October 22: Book it! Chelsea Clinton signed copies of her new book 'It's Your World' in Coral Gables, Florida.
Photo: FilmMagic
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October 22: Katie Holmes looked sophisticated while attending the 2015 Fashion Group International's Night of Stars gala in New York City.
Photo: Getty Images
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October 22: Kourtney Kardashian showed support to her good friend and photographer Brian Bowen Smith during his Metallic Life presentation at De Re Gallery in West Hollywood.
Photo: Getty Images
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October 22: Mel B and her daughter spent some quality time during the WILDFOX Loves Coca-Cola capsule collection party in West Hollywood.
Photo: Jerod Harris/Getty Images for Coca-Cola
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October 22: Sarah Hyland added a little pop to her outfit at the WILDFOX Loves Coca-Cola capsule collection party in West Hollywood.
Photo: Jerod Harris/Getty Images for Coca-Cola
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October 21: The future is now! The cast of 'Back to the Future' celebrated the film's 30th anniversary with a special screening in New York City.
Photo: Getty Images
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October 21: Lo Bosworth stopped by the Café Bustelo Pop-Up Café Experience in NYC for a morning pick me up.
Photo: Marion Curtis on behalf of Café Bustelo
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October 21: Adrian Greiner presented at the 2015 Dell World Conference in Austin, Texas.
Photo: AP Images
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October 21: The Carters take Broadway! Jay Z and Beyonce posed for a photo with Jonathan Groff backstage after 'Hamilton' on Broadway in New York City.
Photo: Getty Images
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October 21: Date night! John Mellencamp and Christie Brinkley made their first official public appearance together at the Isolation of Mister art exhibit opening in New York City.
Photo: Getty Images
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October 21: Karlie Kloss opted for a LBD during the 2015 Pencils of Promise gala at Cipriani in NYC.
Photo: Adam Ho
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October 21: Usher arrived at the Pencils of Promise annual gala at Cipriani Wall Street in New York City.
Photo: Adam Ho
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October 20: Backstreet's Back! The Backstreet Boys made the crowd swoon during their performance at the Balmain X H&M presentation celebration in NYC.
Photo: Getty Images
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October 20: Kendall Jenner and Gigi Hadid fan-girled over the Backstreet Boys during their performance at the Balmain X H&M collection launch in New York City.
Photo: Getty Images
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October 20: Who needs a lift! Balmain creative director Oliver Rousteing lifted up friend and model Kendall Jenner backstage at the Balmain X H&M presentation in New York City.
Photo: Getty Images
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October 20: Balmain's beauties! Gigi Hadid, Kendall Jenner and Jourdan Dunn posed backstage after walking the runway at the Balmain X H&M launch presentation.
Photo: Getty Images
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October 20: Girl power! Beyoncé and Nicki Minaj performed "'Feeling Myself" during the Tidal X 1020 concert at the Barclays Center in Brooklyn, New York.
Photo: Getty Images
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October 20: Nick Jonas kept the crowd dancing during his performance at the Tidal X 1020 concert in Brooklyn, New York.
Photo: Getty Images
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October 20: Cooking something hot! Bradley Cooper, Sienna Miller and Uma Thurman stunned at the New York premiere of 'BURNT' presented by Fiji Water and The Weinstein Company.
Photo: Getty Images
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October 20: AOL Maker's and Gloria Steinem celebrated her new book 'My Life on the Road' in New York City.
Photo: Getty Images
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October 20: Fashion Family! Anna Wintour, Kanye West and Kim Kardashian sat front row at the CFDA Fashion Fund Show and Tea at Chateau Marmont in West Hollywood.
Photo: Getty Images
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October 20: Reese Witherspoon and Monique Lhuillier attended the CFDA Fashion Fund Show and Tea in West Hollywood.
Photo: Getty Images
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October 20: Solange was ready for fall fashion during the CFDA Fashion Fund Show and Tea.
Photo: Getty Images
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October 19: Kate Hudson and Naomi Campbell enjoyed the 'Rock the Kasbah' after party at Hudson New York City, a Morgans Hotel.
Photo: Marion Curtis/Startraksphoto.com
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October 20: Carey Mulligan looked darling during the premiere of 'Suffragette' in L.A.
Photo: Getty Images
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October 19: Work it! Amy Adams celebrated the launch of the new Max Mara ‘A’ bag in NYC.
Photo: Getty Images
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October 19: Meryl Streep gave 'Suffragette' co-star Carey Mulligan a big smooch during the Elle Women in Hollywood Awards.
Photo: Getty Images
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October 19: Hey Amy! The comedian dazzled on the red carpet during the Elle Women in Hollywood Awards in L.A.
Photo: Getty Images
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October 19: Flaunt it! Julianne Hough worked the red carpet during the Elle Women in Hollywood Awards in L.A.
Photo: Getty Images
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October 19: All smiles for a great cause! Nick Cannon and Heidi Klum attended the Gabrielle’s Angel Foundation 2015 Angel Ball in NYC.
Photo: Getty Images
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October 19: Kristen Wiig wore Brandon Maxwell to The Orchard's 'Nasty Baby' premiere in L.A.
Photo: Getty Images
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October 19: Nicole Kidman looked ravishing during the Women of the Year luncheon in London.
Photo: Getty Images
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October 19: Rock 'n' Love! Lady Gaga and her fiancé Taylor Kinney were the perfect match during the 'Rock the Kasbah premiere in New York City.
Photo: Getty Images
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October 19: Quite the spectacle! Jennifer Lopez sported some cat-eye glasses during the 'Rock the Kasbah' premiere in New York City.
Photo: Getty Images
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October 19: Zooey Deschanel, Bill Murray and Kate Hudson were all laughs during the 'Rock the Kasbah' premiere in New York City.
Photo: Getty Images
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October 17: Fitness guru Jillian Michaels partnered with Blue Star Families and Thrive Market for her fitness bootcamp for active military service members and their military families in San Diego.
Photo: Thrive Market