Emma Watson at a Warner Bros. photocall in London.

Photo: Getty Images

• Emma Watson went dark — darker hair, darker makeup, and a velvet black dress — at a Harry Potter event in London last night. It's great how she keeps changing it up! {People StyleWatch}

• Check out a Barbarella-inspired Kim Kardashian posing in white swimwear to promote the new swimwear line she designed for Beach Bunny Swimwear. {CocoPerez}

• Marc Jacobs dressed in drag for the latest issue of Industrie magazine. He never fails to impress us, does he? {Styleite}

• Jessica Biel reenacts a 1952 Revlon ad for the makeup brand's new campaign. {T}

• Ralph Lauren debuted the Big Pony Collection, a new line of men's fragrances that includes Sporty (lime and grapefruit), Seductive (dark chocolate and musk), Adventurous (mint and ginger), and Stylish (mandarin and kyara wood). {NYT}

• GAP opened its first store in China last night in Shanghai. {WWD}

• Gisele Bundchen is rumored to have nabbed Balenciaga's spring ad campaign. And her husband Tom Brady is the new face of Under Armour. Such a busy, beautiful couple. {Elle}

• Teen supermodel Karlie Kloss wore a gorgeous, gold Oscar de la Renta gown to her homecoming dance. Lucky girl! {Fashionologie}