VOTE: This Week's Best Dressed

"Transformers" diva Megan Fox sexed up Fashion Week in the City of Lights, and "Harry Potter" darling Emma Watson looked lovely on the red carpet in rainy London.

Best Dressed of June 6 - 11

Staying Hydrated

Kristin Davis glowed in strapless blue sheath dress and black statement necklace at a Glaceau Vitamin Water event in Sydney.

Hermione All Grown Up

Emma Watson braved the rain in a vintage Ossie Clark dress for the world premiere of “Harry Potter and The Half Blood Prince” in London.

I Love You Fashion

Hayden Panettiere looked confident in a white Andy & Debb cocktail dress with pewter Giuseppe Zanotti Design pumps for a screening of “I Love You Beth Cooper” in NYC.

'Entourage' Style

Carla Gugino wore a dress from Twenty Cluny with Jimmy Choos for the season 6 premiere of “Entourage” in Hollywood.

All About Armani

Megan Fox (pictured with Roberta Armani) wore a gray asymmetrical cocktail dress by Armani for the Giorgio Armani Prive Fashion Show at Paris Fashion Week.

Animal Instincts

Jamie-Lynn Sigler heated up the “Entourage” season 6 premiere in a strapless Donna Karan zebra-print dress in Hollywood.

Bright Night

“Gossip Girl” star Leighton Meester wore a mod Emilio de la Morena shift dress with Alexandre Birman python peep-toe booties for a screening of “500 Days Of Summer” in NYC.

Stylish Serpentine

Former “ER” stunner Thandie Newton added a splash of color to the Serpentine Gallery Summer Party with a Matthew Williamson Pre-Spring 2010 dress and MW shoes in London.

"Extra" wants to know -- Which beauty was this week's best dressed?