It May Be Fall, But You Wouldn't Know It Judging From These Stars' Outfits

Elle Fanning at the New York premiere of The Young Ones.

Jamie Chung at New York Comic-Con.

George Clooney at New York Comic-Con.

Kim Kardashian at Charlotte Tilbury's Make-Up Your Destiny beauty festival.

Mary-Kate Olsen at the 2014 Take Home a Nude event.

Kate Mara in J. Mendel at the opening of Jimmy Choo's New Bond Street Townhouse and the launch of the Vices collection.

Sarah Jessica Parker in Elie Saab at the Broadway opening of It's Only A Play.

Anna Wintour at the Broadway opening of It's Only A Play.

Taylor Schilling at the premiere of Listen Up, Phillip.

Sasha Pieterse in House of Herrera at the Extremely Piaget launch event.

Kiernan Shipka in Chris Gelinas at People's Ones to Watch event.

Chrissy Teigen at the opening of Uniqlo's new Beverly Center flagship store.

Jaime King at the opening of Uniqlo's new Beverly Center flagship store.

Gwyneth Paltrow at The Academy of Motion Picture Arts and Sciences' Hollywood Costume Luncheon.

Cameron Diaz at The Academy of Motion Picture Arts and Sciences' Hollywood Costume Luncheon.

Hilary Swank at The Academy of Motion Picture Arts and Sciences' Hollywood Costume Luncheon.

Emmy Rossum in Altuzarra at the premiere of You're Not You.

Hilary Swank in Gianvito Rossi at the premiere of You're Not You

Chloe Grace Moretz at the 5th Annual PSLA Autumn Party.

Demi Moore at the 5th Annual PSLA Autumn Party.

Demi Lovato in Philip Armstrong at the Vevo Certified SuperFanFest.

Eva Longoria at the 2014 Princess Grace Awards Gala.

Zendaya in Vivienne Westwood at the 2014 Princess Grace Awards Gala.

Kristen Stewart at the Clouds of Sils Maria premiere.

Rita Ora and Kate Moss at the launch of the 34 Kate Moss Coupe.

Nick Cannon at the New York premiere of Addicted.

Jamie Chung at the William Rast US launch at Lord & Taylor.

Jessie J at the William Rast US launch at Lord & Taylor.

Selena Gomez in Dior at the screening of Rudderless.

Michelle Monaghan, in Simone Rocha, and James Marsden, in Thom Sweeney, at the premiere of The Best Of Me.

Janel Parrish in BCBGeneration at Tacori's Annual Club Tacori 2014 event.

Christina Hendricks at Tacori's Annual Club Tacori 2014 event.

Bellamy Young at Tacori's Annual Club Tacori 2014 event.

Christa B. Allen at Tacori's Annual Club Tacori 2014 event.

Kit Harington at the Friars Foundation Gala

Emily Blunt in Roland Mouret at the IWC Gala.

Keira Knightley at the photocall for The Imitation Game.

Jena Malone at the New York premiere of St. Vincent.

Leighton Meester at the Mill Valley Film Festival premiere of Like Sunday, Like Rain.

Naomi Watts, in Jason Wu, and Liev Schreiber at the New York premiere of St. Vincent.

Joshua Jackson, in Ermenegildo Zegnaand, and Diane Kruger, in Michael van der Ham, at the premiere of Showtime's The Affair.

Kristen Stewart in J. Mendel at the New York premiere of Camp X-Ray.

Zendaya at the premiere of Alexander and the Terrible, Horrible, No Good, Very Bad Day.

Bella Thorne at the premiere of Alexander and the Terrible, Horrible, No Good, Very Bad Day.

Jennifer Garner at the premiere of Alexander and the Terrible, Horrible, No Good, Very Bad Day.

Bellamy Young at the 14th Annual Les Girls event.

Allison Janney at the 14th Annual Les Girls event.

Jake Gyllenhaal and Lucy Liu at The Academy of Motion Picture Arts and Sciences New Member Reception.

Lily Collins in Solace London at the world premiere of Love, Rosie.

Dakota Fanning in Valentino at the world premiere of Effie Gray.

Sienna Miller and Tom Sturridge at the world premiere of Effie Gray.

Lea Thompson at the American Horror Story: Freak Show premiere.

Emma Roberts in Saint Laurent at the American Horror Story: Freak Show premiere.

Lea Michele in Cushnie et Ochs at the American Horror Story: Freak Show premiere.

Sarah Paulson in Zac Posen at the American Horror Story: Freak Show premiere.

Jessica Lange at the American Horror Story: Freak Show premiere.

Amanda Peet at the American Horror Story: Freak Show premiere.

Aisha Tyler at the American Horror Story: Freak Show premiere.

Greta Gerwig at the New York Film Festival premiere of Eden.

Jena Malone in Thom Browne at the New York Film Festival premiere of Time Out of Mind.

Marion Cotillard in Dior at the New York Film Festival premiere of Time Out of Mind.

Elle Fanning in Rochas at the 37th annual Mill Valley Film Festival Spotlight Program.

Sasha Pieterse in Naeem Khan at the Centerpiece Gala and world premiere of Inherent Vice during the 2014 New York Film Festival.

Maya Rudolph at the Centerpiece Gala and world premiere of Inherent Vice during the 2014 New York Film Festival.

Megan Fox and Will Arnett at the Underground Event Screening of Teenage Mutant Ninja Turtles.