The Best-Dressed Stars This Week: 8/16/13

This little suit situation is everything and more. Keri Russell's clean-cut ensemble is made by none other than Stella McCarthy. She accessorized the monochromatic look with a Tiffany & Co. Sabrina Clutch and studded shoes.

Rooney Mara's cropped top and black skirt are both made by Calvin Klein. She intensified the sleek look with natural makeup, an edgy middle part, and a low ponytail draped over both of her shoulders.

Rather than gold and glitter, Naya Rivera chose a major metallic Paulie Ka gown to wear to the Moet Rose Lounge Big Sean Hall of Fame event. To finish off the sultry Hollywood look, she opted for a pair of Marina B studs.

It's off the shoulders, and it owns our heart! Maria Bello's black and white geometric Black Halo gown is classic and an architecture dream. She added more details to the outfit with a pair of super strappy stilettos.

Julianne Hough has once again made our best-dressed list. At this rate, she could quality for the best-dressed of the year award. Julianne stepped out in an extreme Camilla and Marc cutout dress. With an asymmetrical hemline and multi-straps, it screams sexy.

This PLL star is a Pretty Little Lady! Sasha Pieterse donned a royal blue Shoshanna jumpsuit to the Cosmopolitan's Summer Bash.

The Real Housewives of Miami star Joanna Krupa looked absolutely beautiful, as per usual, in her Ramy Brook Miami dress.

This whimsical item still has a lot of sass. Emmy Rossum wore a Rebecca Minkoff mini to a party, pairing the cutsie cocktail dress with bubble gum pink pumps.

Disney star Bella Thorne showed up at The Mortal Instruments: City of Bones premiere wearing an printed, kaleidoscope-esque McQueen gem.

We live for this outfit. Lily Collins sizzled in this Cushnie et Ochs cutout dress, displaying a bit of her super flat core. When it came to shoes, she slipped on a pair of pointed-toe pumps.

Vanessa instagammed an up-close of this braided masterpiece. If you haven't checked it out, do so after we critique this outfit. She played up her eccentric hairstyle with a black and gold long-sleeved Temperley London dress. It's so very Vanessa.