Sienna Miller

BAUER-GRIFFIN

Though we’ve seen lots of stars go dark for roles in the past few months — Jessica Biel and Mischa Barton pop to mind — we had to look twice when Sienna Miller appeared with long brunette hair on the set of her new film Hippie Hippie Shake. She was almost unrecognizable with her wig on! We definitely prefer the British star with her normal blonde bob that highlights her big blue eyes and unique fashion sense, but we want to know what you think. Tell us: Do you like Sienna with brunette hair? Or should she stick to blonde off camera?

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Looking like she fell out of the 1950’s in a red bodysuit and leopard scarf, Sienna Miller celebrated her clothing line with sister Savannah in an intimate party at Bergdorf Goodman on Wednesday night. And lest you worry that Twenty8Twelve by s. miller is only for willowy stars like Sienna herself, she assures PEOPLE that’s not the case. “Throughout the collection we’ve really covered all different ages, all different body types. It’s really fashionable clothes for all different sorts of confident women.” Speaking of confident women, we had to know if there was any sibling rivalry involved in the design process. Savannah, the older and taller of the sisters, tells PEOPLE that “We both bring something very different to the line, and working together we complement each other. We get along very well. We know each other very well so it’s never a conflict. It’s a really good time to spend time together doing something we both love so it’s great.” Sounds like a perfect match! Shop the collection at my-wardrobe.com.

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Vests made a comeback last fall — and from menswear-inspired to open cropped styles, we thought we’d seen them all. But then some fashion-forward stars have come up with a new twist on the wardrobe staple — cropped, multi-colored vests. From Mischa Barton’s all-sequined number to Jessica Simpson’s bright macrame version to Sienna Miller’s metallic patchwork, the trend seems to be taking hold of some pretty stylish women! Besides the cropped length — which is tough for most women to pull off — there is something about these that seems more costume-y than retro-cool. But maybe that’s just us! Tell us: Would you wear these multi-colored vests? Is this a trend you want to try?

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In the August issue of StyleWatch, you can check out stars like Cameron Diaz, Rihanna, Kylie Minogue, and more sporting the latest accessory du jour — glossy handbags. Sienna Miller was recently spotted on her way to the airport carrying this chic Chloe bag — which adds just the right polish to her casual travel outfit. For a classic look, go with darker colors, like black, navy or chocolate brown, or go bold with metallics or bright colors. Below are some of our favorite picks. Tell us: Would you wear a patent leather bag?

Get the Look!
Splurge:
Burberry “Beaton” hobo, $850, nordstrom.com

Michael Michael Kors “Chestertown” satchel, $398, nordstrom.com

Adrienne Vittadini “Norena” Tote, $228, dillards.com

Steal:
“Natasha” patent tote, $50, baghaus.com

Patent tote, $40, gap.com

Zou Zou quilted patent messenger tote, $20, jcpenny.com.

And be sure grab the brand new August issue of StyleWatch, on sale now!

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We’ve talked before about what a difference a tent dress makes for a woman’s figure, as in totally obscures it. Since we’re pretty used to seeing Sienna Miller in floaty frocks, we didn’t think much of it when she arrived at the Late Show in a babydoll gray dress from her new line Twenty8Twelve. But our jaws dropped when she emerged from taping the show in a second-skin black Calvin Klein sheath dress and sexy high heels — va-va-voom! Who knew that body was hiding under all those layers? We totally relate to Sienna’s love of loose dresses, but we can’t help but wonder if she shouldn’t give them a break. Tell us: Which dress do you like better on Sienna? Should she stick to form-fitting dresses?

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As the weather gets hotter, we just want our clothes to get easier — and what’s simpler than a dress than can go day to night and requires the bare minimum of accessories? We’ve spotted Eva Mendes, Nicole Richie and Sienna Miller wearing smocked tube-dresses with great bold patterns and long sweeping hems. Just toss on a few bangles, a cool bag and comfy sandals, and you’re set! Dress it up for night time with jeweled flip-flops and an oversize clutch. The best part of these dresses is the smocking — unlike normal strapless dresses that tend to fall, these stay snugly on the bustline. Here are a few of our favorites. . .Tell us: Would you try a smocked sundress?

Get Eva’s Juicy Couture Dress, $198 at neimanmarcus.com.

Tropical Tube Dress, $23 at forever21.com

Mossimo Long Floral Halter Dress, $22 at target.com

L8er Smocked Strapless Floral Maxi Dress, $45 at macys.com

Roxy ‘Iris’ Print Tube Dress, $50 at nordstrom.com

Photo: splash news online; Richard Young/startraks

Sienna Miller has become known for being a fashion icon over the past few years, so it only makes sense that she would join the ranks of Sarah Jessica Parker, Kate Moss and the Olsen sisters in designing her own line. The added bonus is that her sister, Savannah, is actually a graduate of Central Saint Martins school of design in London and a fashion designer! The sisters have paired up to create Twenty8Twelve and instead of rolling it out with a big splashy fashion show, Sienna’s just started wearing the clothes — and who could be a better model? She wore her elegant little black dress to the recent Glamour Women of the Year Awards and her Gabrielle cotton camisole paired with jeans while strolling through London. We’ve got to say — so far, so good! We can’t wait to see the rest of the line in the fall. Tell us: Would you wear Sienna Miller’s clothing line?