The Best-Dressed Stars This Week: 1/25/13

Showing off her gorgeous gams, Taylor Swift looked hot in a white Kaufman Franco plunging neckline dress at the 40 Principales Awards in Spain.

And here's Nicole Richie killing it in a black leather skirt and polka dot sheer blouse at the Ferragamo Presents Spring Runway Collection.

Downton Abbey's Lily James wore Donna Karan to Britain's National Television Awards and paired her crimson dress with a matching lip. Do we sense some V-Day inspiration here??

Revenge star Madeleine Stowe proves you can't go wrong in a belted Bottega Veneta cocktail dress with a tiered skirt. Can we look this amazing when we're 54?!

Rocking a sheer black top and neon yellow jeans, Shay Mitchell looked adorable at the L'Amour By Nanette Lepore For JCP Launch Party!

Rosie Huntington Whiteley was the definition of street chic out and about in New York City. Now this is how you do leopard on leopard accessories with a wide-brim hat!

We're all about a menswear-inspired fashion moment and Chloë Grace Moretz was total perfection in a Dolce&Gabbana blazer and pants at the Movie 43 premiere. Plus, cute bow heels Chlo!