This week was all about the neckline. And the winners are...

Anne Hathaway in Alexander McQueen Resort at the “One Day” premiere in London. The "One Day" actress looked ravishingly retro (and somewhat bridal) in this beautifully-embroidered dress. I only wish she'd finished it off with a more delicate shoe.

Jennifer Lopez in Gucci while filming a commercial for Fiat in Los Angeles. Like J. Lo, this draped, chiffon halter gown strikes the perfect balance between feminine and fierce. The singer/actress wore a similar Gucci style to the Met Gala earlier this year. 

Dita Von Teese in a floral day dress while out and about in London. This retro midi dress is quintessentially Dita. She played up her punchy style with a colorful shoe and headscarf.

Peaches Geldof in Alberta Ferretti at the “One Day” premiere in London. The British journalist, television presenter and model looked nothing short of breathtaking in this crystal-embellished gown, which looks like something that could've been worn by Taylor Swift.

Lake Bell in Cushnie et Ochs at the screening for "A Good Old Fashioned Orgy" in Hollywood. This cutout LBD oozes sex appeal. While I love Lake's metallic-tipped pump pairing, I do wish she would've done something different with her hair.

Photos (left to right): Dave M. Benett/Getty Images; MAP/Splash News; CelebrityJuicer/Splash News; Mike Marsland/WireImage; Paul Archuleta/FilmMagic