Rita Ora

Kate Moss was the life of the party in London last night! Along with her husband, Jamie Hince, mom Linda Moss, and friends like Stella McCartney and Rhys Ifans, Kate put on her finest '80s gear to mark the 50th birthday of their pal Fran Cutler at the Groucho Club. Fran, a PR executive, has been friends with Kate for years, and their many mutual friends helped pull off the surprise bash, which included many unique moments, from a This-Is-Your-Life-style presentation from Rhys and a set from Rita Ora.

Rita was there with her BFF Cara Delevingne. 20-year-old Cara and 22-year-old Rita's social circles have overlapped with Kate's now that Rita is romantically linked to Kate's good friend Dave Gardner, who's also close with David Beckham. Rita and Cara both dressed up for the period theme, though Kate topped them all by pulling out a second ensemble for the afterparty at The Box.

London Fashion Week is coming to a close today, and stars flocked across the pond to take part in the stylish celebrations. Justin Timberlake and Jessica Biel attended the Tom Ford fashion show, while Salma Hayek and her husband François-Henri Pinault sat front row at the Christopher Kane presentation. Lots of celebrities turned out for Topshop's Unique fashion show, including One Direction star Louis Tomlinson and his girlfriend Eleanor Calder, as well as Pixie Geldof and Daisy Lowe. The biggest event for the week was Burberry Prorsum, which drew Rosie Huntington-Whiteley, Michelle Dockery, and Kate Beckinsale. Click through to see many more fashion-loving famous faces in the English capital!

Kate Hudson was joined by England's bright young things last night when she attended Muse's special concert for the War Child charity in London. She wore a green jumpsuit while she mingled in the concert's VIP area, which also held Rita Ora, Jamie Hince, model-of-the-moment Cara Delevingne, and Harry Styles, who was fresh off of Taylor Swift's alleged public diss of him at the Grammy Awards earlier this month. Harry recently opened up about Taylor Swift's Grammys show, saying that it was "just another good Taylor Swift performance" when asked about her alluding to him in a song. Cara, Harry, Rita, and Jamie kept the good times rolling post-show with a stop by AnOther magazine and Dazed & Confused London Fashion Week party at Cafe Royal.

Kate has been keeping busy in London while Matthew Bellamy has been working on gigs with Muse. Kate recently attended the Elle UK Style Awards with friend and designer Stella McCartney, and she and Matthew have been enjoying some downtime with baby Bing. The couple's London break won't last long, as Matthew will jet out to the US later this week to continue his tour with Muse.

Paris Haute Couture fashion week is in full swing and celebrities are flocking to the City of Lights to take in the latest shows. Diane Kruger and Hailee Steinfeld were spotted at the Chanel Spring 2013 Haute Couture fashion show on Tuesday, while Kim Kardashian went to Stephane Rolland. Salma Hayek attended the Giambattista Valli haute couture show, and Jessica Alba and Chloë Moretz took in the latest creations at Christian Dior.

There's much more to come, but click through for more celebrity sightings at Haute Couture fashion week so far!

Diane Kruger and Hailee Steinfeld brought their Hollywood star power to the Chanel Spring/Summer 2013 Haute Couture fashion show in Paris earlier today. Karl Lagerfeld's longtime friend Diane, who flew to Paris after celebrating the San Francisco 49ers' win in Vancouver, wore head-to-toe Chanel to the event. Meanwhile, Hailee wore a Chanel cardigan and Christian Louboutin heels. Other celebrities who turned out included stylish girls like Rita Ora, Clémence Poésy, and the singer Grimes. Click through for a look at the fashionable front row and be sure to check out the full Chanel Spring 2013 Couture fashion show.

The 2012 British Fashion Awards took place at the Savoy Theater in London last night. The event was hosted by actress Gemma Arterton and British radio presenter Nick Grimshaw, bringing out a group of stylish stars. Designer Stella McCartney was honored with two titles including designer of the year and best designer brand, while Alexa Chung took home British style icon for the third time. Check out the full list of British Fashion Awards winners.

Model Amber Valletta chose a dramatic red gown for the occasion, and singer Rita Ora went strapless in Vivienne Westwood. Rita made the rounds and said hello to pals like the designer Valentino. Salma Hayek was on hand to celebrate and mingled with Princess Beatrice, while Lily Collins arrived with boyfriend Jamie Campbell Bower. It was the couple's first official appearance after they were linked over the Summer while filming The Mortal Instruments.