Stella McCartney

Our favourite famous famous gave us many talking points this week. Top of the list? Cara Delevingne, who locked lips with another beautiful English It Girl and made sure to share the resulting pics on Instagram. Also making us sit up and pay attention? The Aussie model who took a unique approach to expressing her opinion on gun laws. . . at the 2013 Met Gala. A wild week it may have been, but it was just as stylish and beautiful as ever. Lara Bingle, Miranda Kerr and Bambi Northwood-Blyth all gave us some behind-the-scenes pics in the makeup chair, Phoebe Tonkin found her wedding dress inspiration (while another celebrity got married in black!), Jennifer Hawkins took a break on a photo shoot and Nicole Richie zoomed in on some gorgeous details (check out those nails!). There's so much to see — click through now to check it all out!

Tom Cruise's latest leading lady, Ukrainian actress Olga Kurylenko, lights up the big screen in Oblivion. But the former Bond girl's high-fashion choices have also been drawing major attention on red carpets worldwide. At the most recent Oblivion premiere in Japan, Kurylenko stepped out in a gorgeous striped Dior ball gown, but she's treated us to a variety of glamorous looks on every stop of her promo tour. For the Hollywood premiere, she took the plunge in a sexier Burberry number; in Taiwan, she gave us high fashion in a Balmain minidress with gold Jimmy Choo sandals — for more from Oblivion's leading lady, just keep clicking.

Kristen Stewart pulled out a show-stopping look when she attended the 2013 Costume Institute Benefit at the Metropolitan Museum of Art in NYC today while wearing a Stella McCartney jumpsuit. Although her boyfriend, Robert Pattinson, didn't join her on the red carpet, she did attend the event with designer Stella by her side. Kristen has attended previous Met Gala parties, and this year's exhibit, Punk: Chaos to Couture, is a fitting one for the famously non-conformist actress. In addition to being at home with the bash's theme, she can rest assured that she is accepted by the fashion crowd, as she was recently confirmed for her second ad campaign with Balenciaga as the face of the brand's Florabotanica fragrance. Be sure to vote on Kristen's red carpet look in our 2013 Met Gala fashion polls.

Kate Moss was the life of the party in London last night! Along with her husband, Jamie Hince, mum 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 after party at The Box.

In honour of Earth Day today, we're taking a look at the celebrities who love giving back. Whether they're thinking green in their own lives or promoting environmental habits and products, these stars do their part to help clean things up.

Click through our slideshow to see who made the list, and be sure to check out all of our eco content to celebrate Earth Day.

Tom Cruise's latest leading lady, Ukrainian actress Olga Kurylenko, is set to light up the big screen in Oblivion when it lands in theaters on April 11. But in the meantime, the former Bond girl's high-fashion choices are already drawing major attention on red carpets all over the world. At the Oblivion premiere in London, Kurylenko looked exquisite in a black-and-white off-the-shoulder gown; before that, at the Dublin premiere, she stood out in a red lace Valentino gown; at the BAFTA Awards, she exuded dark glamour in a sequined lace gown; she looked undeniably fresh in a green printed cocktail dress at a BAFTA party; and at the Oblivion premiere in Moscow, the actress dropped jaws in a floral-appliqué fit-and-flare Elie Saab dress. Click on to witness Olga Kurylenko's latest red-carpet ensembles, and stay tuned for more fabulous fashion moments that are sure to come.

Tom Cruise's latest leading lady, Ukrainian actress Olga Kurylenko, is set to light up the big screen in Oblivion when it lands in theaters on April 11. But in the meantime, the former Bond Girl's high-fashion choices are already drawing major attention on the red carpets all over the world. At the BAFTA Awards, Kurylenko exuded dark glamour in a sequined and lace gown; she looked undeniably fresh in a green printed cocktail dress at a BAFTA party; and at the recent Oblivion premiere in Moscow, the actress dropped jaws in a floral-appliqué fit-and-flare Elie Saab dress. Click on to witness Olga Kurylenko's latest red-carpet ensembles and stay tuned for way more fabulous fashion moments sure to come.

What we've learned from this week's Top 10 round-up? Black is, and always will be, the new black. With majority of our best-dressed stars stepping out in black — or a something almost as dark — we were reminded of the power that a sexy, moody number can yield. Megan Gale's cut-out sheath is a case in point, highlighting her fabulous body and giving her a more mysterious edge. Lara Bingle and Diane Kruger opted for very similar takes on the midnight tone, both sporting tuxedo dresses and bare legs — masculine dressing has never been so sexy. Of course, someone had to lighten things up. . . And who better than Aussie model Jess Hart? She hit the streets of New York in a happy mish-mash of pastels, and we couldn't have loved her colour palette more. There's more to see — take a sartorial step this way, if you please.