Oscars 2015 Best Dressed: Margot Robbie, Rosamund Pike, Reese Witherspoon, Jennifer Lopez & Lupita Nyong’o

At the 2015 Oscars, the stars turned out in an array of fashions to make their mark at the biggest red carpet event of the year. This year, Margot Robbie, Rosamund Pike, Reese Witherspoon, Jennifer Lopez and Lupita Nyong’o rounded out the top five best dressed.

Oscars Best Dressed

Robbie (above), at the Oscars to present the Technical Achievement and the Gordon E. Sawyer Award, wowed on the red carpet in a black, long-sleeve Saint Laurent gown that featured a plunging neckline. The Wolf of Wall Street actress completed her look with a Van Cleef & Arpels necklace.

Nominated for the Best Actress in a Leading Role Oscar for starring in Gone Girl, Pike had another fashion hit with a custom red Givenchy dress. The strapless number with a lace overlay had satin detailing around the waist and a high slit.

Witherspoon, another actress who’s been topping the best dressed lists this award season, wore a monochrome Tom Ford gown. The elegant off-the-shoulder gown had a black band at the top and at the Oscar nominee’s waist. The Wild actress accessorized for the night with diamond cluster stud earrings and a matching diamond bracelet.

Lopez took another risk on the red carpet at the 2015 Oscars in a nude-colored and sparkly Elie Saab gown. Before going into the show, Lopez, who presented the Best Costume Oscar, admitted that the dress’ full skirt wasn’t conducive to partying. “You can’t party in this dress, not even me,” J. Lo quipped.

Nyong’o, who won the Academy Award for Best Actress in a Supporting Role in 2014 for her work in 12 Years a Slave, stunned on the red carpet in a white custom Calvin Klein dress. The dazzling number featured thousands of pearls and an open back. She completed the outfit with Nicholas Kirkwood heels.