Here at Fab, British beauties and style icons Alexa Chung and Sienna Miller have each claimed a place in our fashion hearts. They're both a go-to source for style inspiration, whether they're gracing a red carpet or passing through Heathrow — Alexa for her tomboy-eclectic ways, Sienna for her effortless-chic. But, when it comes to picking a favorite, we're a little divided here in the office; Read more

She dazzles just as easily in denim cutoffs as she does in Versace, and lends a signature bohemian flair to anything she puts on. And because today is Sienna Miller's birthday, there's only one way to celebrate the style star — with a fashion tribute, of course! Click through for 60 fabulous looks and red carpet moments from the boho beauty, and join us in wishing this December baby a very Read more

Between the Emmys, London and Milan Fashion Weeks, and NYC's Ballet Gala, there were lots of fashionable fêtes happening this week — and our favorite style stars hit the red carpet dressed to the nines. While some stuck with short frocks, a select few went all out in sleek, sophisticated, floor-length gowns. Sienna Miller partied in beaded Dior, Natalia Vodianova dazzled in feathered Givenchy Read more

Sienna Miller hugged a friend as she left the Royal Haymarket Theatre in London last night. She was sporting sweats after another night on stage for her production of Flare Path, which has been running for the past couple of months and may bring her to the states for a run on Broadway later this year. Her rigorous performance schedule has meant fewer date nights with her man, though hopefully Read more

Even though sisters Savannah and Sienna Miller left the brand earlier this year, the ultra-cool Twenty8Twelve girl that they created is still very much present in the Fall '12 collection. Designers Vanessa James and Elsa Elphick offered a '60s mod grouping for the season, featuring Beatnik-style babydoll frocks with tights, slim-fitting trousers and flawlessly-cut coats — all perfect pieces for Read more

True to the Rachel Zoe manifesto, her Fall '12 lineup delivered a unique mix of nostalgic and contemporary-cool pieces. Inspired by the rock 'n' roll glamour of 1960s London — think Mick Jagger and Marianne Faithfull — the collection boasted all the trademark elements of that oh-so-cool era. Knit minidresses, sequined gowns with updated twists, tailored menswear-inspired suits in jewel-toned Read more

Ever wonder how celebrities manage to appear both weather appropriate and still impeccably styled? Yeah, us too. So, we're taking a closer look at some of our favorite street-styled celebs who've somehow set the tone for a very stylish and cozy-comfy Fall. With wardrobes that consist of luxe knits, printed sweaters, leather leggings, and great denim, Jennifer Aniston, Rachel Bilson, Sarah Jessica Read more

Sienna Miller was decked out in designer gear as she left the Theater Royal in London last night following her latest performance in Flare Path. She wore her all-time favorite studded Chloe boots along with a chic orange and black Prada tote. Sienna's one of a number of fashionable young Brits, and FabSugar wants to know who has the edge on style — Sienna or Alexa Chung? Both Sienna and Alexa Read more

Ashley Olsen had wet hair yesterday when she left a hotel in NYC. She's hanging out in the Big Apple with her sister Mary-Kate, who was also spotted running errands around the city during the p.m. hours. Mary-Kate and Ashley's new venture StyleMint is inching toward a launch, and the sisters just released a new promotional video for the project. They partnered with the online group BeachMint for Read more

This week's batch of celebrity style is admittedly relaxed and easy, albeit, the way Summer looks should be. We spied sweet, light, breezy dresses on Alessandra Ambrosio and Sienna Miller, Kirsten Dunst rocking seasonal denim, and Margherita Missoni mixing up printed pants and bright, woven flats. Click through to see the rest of the top 10 — and get inspired to create your own hot Summer Read more