This week, celebrities proved that gray days don't have to be a drag -- as long as you stick to shapely and embellished frocks. Ditto for those head-to-toe ensembles: make your basic black stand out with unexpected details.

Gwyneth Paltrow left the May Fair hotel in London, England on Jan. 20 in a single-shoulder gunmetal mini. The "Country Strong" actress kept her accessories minimal by adding nude sandals and a silver dagger necklace.

Camilla Belle chose an embellished Alberta Ferretti design to the Art of Elysium Gala on Jan. 15. She paired her feathered and pleated dress with satin Brian Atwood heels and over $230,000 in Cartier diamonds.

First lady Michelle Obama debuted a new, curly 'do and pair of over-the-knee boots with a Marc Jacobs sheath dress to announce of a comprehensive effort to provide healthier and more affordable food choices to Wal*Mart on Jan. 20 in Washington D.C.

Kim Kardashian gave fans a show as she arrived at the "Late Show With David Letterman" on Jan. 18 in NYC in a Marc Bouwer black mesh and sequined dress from the Spring 2011 collection. She added black patent leather pumps and metallic nails to complete her look.

Supermodel Bar Refaeli sat in the front row at the Escada Sport show during the Berlin's Fashion Week on Jan. 19 wearing an all black ensemble with plunging neckline and wide-legged trousers. The 25-year-old added a round clutch and cool cuff.

Also in Berlin on Jan. 19 was Reese Witherspoon, who attended a photocall for her latest flick, "How Do You Know" in a Giambattista Valli LBD, Irene Neuwirth long rose gold and black onyx necklace, Prada ankle boots and black tights.