It may seem like unfamiliar territory at first -- wearing full-on florals and stark white in the dead of winter -- but these celebs prove that with the right attitude and accessories, anything goes!

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Statuesque Krysten Ritter wore a vintage-looking Alberta Ferretti gown to the 2010 Hollywood Style Awards on Dec. 12 in Westwood, Ca. Her modern accessories -- Jamie Wolf diamond earrings, Ippolita quartz bangles and an oversize Jimmy Choo clutch -- kept the look young and fresh.

Leighton Meester chose a "Country Strong" Christian Dior floral minidress for the film's Beverly Hills screening on Dec. 14 and added Pierre Hardy ankle-strap wedges for a funky touch. The actress also sported gold Cathy Waterman accessories and bright-red lipstick.

Kristen Bell paid homage to the Brits in a Stella McCartney botanical print dress from the Spring 2011 runway while attending her own premiere of "Burlesque" on Dec. 13. The petite blonde added satin eggplant Salvatore Ferragamo pumps to complete her blooming look.

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The arctic front didn't keep Michelle Williams from locoking hot at a sreening of her latest film, "Blue Valentine" on Dec. 13 in NYC. The pixie cut actress chose a Christian Dior white strapless mini dress and purple satin Charlotte Olympia pumps. A wealth of accessories would've taken away from the soft details, which is why a single bangle did the trick.

"Glee" star Lea Michele went to 2010 Hollywood Style Awards on Dec. 12 in Westwood, Ca. wearing a white strapless dress from The Row. The perfomer always makes interesting red carpet choices. The waffle texture of this gown is a cool break from gold lamé!

Meanwhile, Jessica Alba paired her new bob haircut with a tiered feather Valentino mini and strappy metallic Christian Louboutin heels at the premiere of "Little Fockers" on Dec 15 in NYC. The festive frock would've fit right in at any holiday party considering the winter white dress was detailed with ribbons and bows!

Peruse our other favorite celeb looks of the week!