Though Fashion Week might be closest to our minds with the semiannual festivities kicking off just a few days ago, it's far from the top priority for stars like Cameron Diaz , Diane Kruger , Taylor Swift , and Olivia Palermo, who kept their calendars busy during the runway shows.
After all, how could you be thinking of Spring 2015  when September 2014 has such stunning styles to offer, such as Cameron's strapless Dior jumpsuit, Diane's peach, long-sleeve Prada  number, or Taylor's Sass & Bide  peplum bustier dress? See all the stars who had us none too sad to say farewell to August in the gallery.
— Additional reporting by Sarah Wasilak
Jessica Chastain in Oscar de la Renta  at the opening ceremony for the 40th Deauville American Film Festival.
Cameron Diaz  in Dior at the German premiere of Sex Tape.
Diane Kruger  in Prada  at the IFA 2014 Consumer Technology Trade Fair Opening Gala in Berlin.
Taylor Swift  in Sass & Bide  at the 2014 Deutscher Radiopreis in Germany.
Kristen Bell  in an Etro  jumpsuit at the premiere of The Judge during the Toronto International Film Festival.
Ashley Greene  in Antonio Berardi  at the Venice Film Festival premiere of Burying the Ex.
January Jones  at the photocall for Good Kill during the 71st Venice Film Festival.
Cameron Diaz  at the Berlin photocall for Sex Tape.
Nicole Kidman  in Valentino at the screening for Before I Go to Sleep in London.
Lena Dunham at the celebration of Betty Halbreich's new memoir, I'll Drink to That: A Life in Style, with a Twist.
Heidi Klum  in Versace  at the America's Got Talent season 9 postshow red carpet at Radio City Music Hall.
Cameron Diaz  at a Paris photocall for Sex Tape.
Kim Kardashian  at the Genetic x Liberty Ross launch event.
Liberty Ross at the Genetic x Liberty Ross launch event.
Vanessa Hudgens  at the Flaunt Magazine Distress Issue launch party.
Alexa Chung in a white feathered shift dress at the Christian Siriano Silhouette pop-up shop.
Renée Zellweger  at the annual Couture Council Award for Artistry of Fashion event honoring Carolina Herrera .
Cody Horn in Jonathan Saunders  at the Estée Lauder Modern Muse Moments screening.
Milla Jovovich in Saint Laurent  at the Cymbeline premiere during the 2014 Venice Film Festival.
Brooklyn Decker visiting Extra.
Cate Blanchett  with Andrew Upton at the Sydney Theatre Company launch.
Cameron Diaz  at a London photocall for Sex Tape.
Uma Thurman  in Jenny Packham  at the Chopard  and Vanity Fair Backstage at Cinecitta Exhibition.
Charlotte Gainsbourg in Anthony Vaccarello  at the Venice Film Festival premiere of Nymphomaniac: Vol. II.
Adam Driver in Ermenegildo Zegna Couture at the Venice Film Festival premiere of Hungry Hearts.
Uma Thurman  in Chopard  jewelry at the Venice Film Festival premiere of Nymphomaniac: Vol. II.
Olivia Palermo at the Magnum 25th anniversary celebration.
Zoë Kravitz at the Surf Lodge launch of Hoot.com.
Helen Mirren  at a photocall for The Hundred-Foot Journey.
Gerard Butler  at the announcement of his brand-ambassador role at Boss and Boss Bottled.