This week's best-dressed list was filled with stars who wore simple dresses with flawless fits. Lupita Nyong'o shone in a red sleeveless dress, while Amy Adams wowed in a LBD with lace detail.
Though there were many amazing looks this week, the gold star belongs to Zoe Saldana who worked it in a quirky skirt and top combo. The patterned look could have easily been overwhelming, but Saldana's keen fashion sense (and minimal accessories) ensured that it was head-turning in the best way possible.
Lupita Nyong'o in Elie Saab
This simple red dress is perfection on Nyong'o. The color really pops against her skin tone, and the added sparkle keeps the look interesting.
Amy Adams in Altuzarra
It's hard to go wrong in an LBD. This one is special because of the lace detailing around the neckline and the long sleeves -- few people opt to cover their arms on the red carpet, but it can actually make a dress very sexy.
Blake Lively in Marchesa
Lively looks like a blonde bombshell in this ensemble. Her flapper-style dress hugs her curves, and her retro waves and bold red lipstick make the look very old Hollywood.
Michelle Obama in Marchesa
This dress left us awestruck. The emerald off-the-shoulder gown highlights her famous guns, while her delicate diamond necklace draws the attention towards her voluminous locks and flawless complexion.
Rooney Mara in Lanvin
There is a reason that Mara always sticks to neutral colors -- they look amazing on her. This white gown is very classic, but has a beautiful sculptural shoulder piece, which is the type of fashion risk-taking that Mara has become known for.
Zoe Saldana in Sachin + Babi
Though this ensemble has a lot going on, it works because Saldana stuck to a neutral color palette. The various dots and stripes work together harmoniously and make the actress look fashion-forward.
Reese Witherspoon in DVF
This gray dress fits Witherspoon like a glove, and the black lace detailing around the edges is very slimming.
'Tis the season for sparkle. Collins' little shift dress is adorable on her, especially when paired with thigh-high boots, tousled waves and deep red lipstick.
Sometimes all you need is a tight, long-sleeve black top (just ask Audrey Hepburn). The laid-back nature of her shirt, paired with her grey peplum pencil skirt and strappy heels, is the perfect mix of casual and sexy.
Jessica Biel In Giambattista Valli
Biel's all black outfit is so special because of the various textures in her outfit, her patterned pumps and that pink lipstick.
More celebs who made the best-dressed list: