Amal donned a vintage ivory Chanel crop top and skirt combo, which she styled with burnt orange statement earrings, black Paul Andrew pumps and a black-and-gold chain purse.
But her best accessory of all? Her husband, George Clooney, who looked dapper in head-to-toe black.
David Biedert / credit suisse
The gathering, which was hosted by publisher Tina Brown, was attended by powerful men and women from across the globe, including U.S. Vice President Joe Biden and Tidjane Thiam, CEO of Credit Suisse.
David Biedert / credit suisse
Amal and her client, 23-year-old ISIS survivor Nadia Murad, were recognized at the star-studded soiree for their continued fight for victims of genocide. Other guests included Matt Damon, Chinese president Xi Jinping, Queen Rania of Jordan, Pakistani filmmaker Sharmeen Obaid-Chinoy, Nigeria's finance minister, Kemi Adeosun, Microsoft C.E.O. Satya Nadella and actress Gillian Anderson.
Amal recently spoke out on women's rights and victims of ISIS at the Texas Conference for Women in Austin, Texas, last November.
See more photos of Amal Clooney:
Amal Clooney out and about
Amal Clooney out and about
LOS ANGELES, CA - OCTOBER 05: Amal Clooney at Farfetch and William Vintage Celebrate Gianni Versace Archive hosted by Elizabeth Stewart and William Banks-Blaney on October 5, 2017 in Los Angeles, California. (Photo by John Sciulli/Getty Images for Farfetch)
NEW YORK, NY - SEPTEMBER 21: Amal Clooney on September 21, 2017 in New York City. (Photo by Gotham/GC Images)
VENICE, ITALY - SEPTEMBER 02: George Clooney and Amal Clooney walk the red carpet ahead of the 'Suburbicon' screening during the 74th Venice Film Festival at Sala Grande on September 2, 2017 in Venice, Italy. (Photo by Venturelli/WireImage)
LONDON, ENGLAND - MARCH 29: Amal Clooney arrives at Villandry restaurant after attending International crimes in Syria and Iraq - Chatham House discussion on March 29, 2017 in London, England. (Photo by Ricky Vigil M/GC Images)
NEW YORK, NY - MARCH 09: Amal Clooney is seen on March 9, 2017 in New York City. (Photo by XPX/Star Max/GC Images)
Amal Clooney meets with Secretary-General Antonio Guterres at the UN Headquarters in New York City, New York, March 10, 2017. Amal Clooney is the Legal Representative for Nadia Murad Basee Taha and other Yazidi survivors. (Photo via EuropaNewswire/Gado/Getty Images).
Amal Clooney and Georges Clooney seen leaving their hotel in Paris, on February 26, 2017. (Photo by Mehdi Taamallah / Nurphoto)
Pregnant Amal Clooney and Georges Clooney seen arriving at the Ritz hotel in Paris, on February 25, 2017. (Photo by Mehdi Taamallah/NurPhoto via Getty Images)
PARIS, FRANCE - FEBRUARY 24: George Clooney and Amal Clooney arrive at the ceremony of the Cesar Film Awards 2017 at Salle Pleyel on February 24, 2017 in Paris, France. (Photo by Stephane Cardinale - Corbis/Corbis via Getty Images )
LONDON, ENGLAND - JANUARY 09: George and Amal Clooney attend the Netflix special screening and reception of The White Helmets hosted by The Clooney Foundation For Justice with George and Amal Clooney, at the Bvlgari Hotel on January 9, 2017 in London, England. (Photo by David M. Benett/Dave Benett/Getty Images for Netflix )
British human rights lawyer Amal Clooney arrives to address the Texas Conference for Women held at the Austin Convention Center on November 15, 2016 in Austin, Texas. / AFP / SUZANNE CORDEIRO (Photo credit should read SUZANNE CORDEIRO/AFP/Getty Images)
NEW YORK, NY - SEPTEMBER 22: Amal Clooney seen out in Manhattan on September 22, 2016 in New York, NY. (Photo by Josiah Kamau/BuzzFoto via Getty Images)
NEW YORK, NY - SEPTEMBER 21: Amal Clooney is seen in Uptown on September 21, 2016 in New York, New York. (Photo by Alessio Botticelli/GC Images)
NEW YORK, NY - SEPTEMBER 17: Amal Clooney seen on the streets of Manhattan on September 17, 2016 in New York City. (Photo by James Devaney/GC Images)
NEW YORK, NY - SEPTEMBER 16: Amal Clooney attends the Women In The World reception honoring appointment of UN Office on Drugs and Crime Goodwill Ambassador Nadia Murad on September 16, 2016 in New York City. (Photo by Matthew Eisman/Getty Images)
CANNES, FRANCE - MAY 12: George Clooney with wife Amal Clooney attend the 'Money Monster' premiere during the 69th annual Cannes Film Festival at the Palais des Festivals on May 12, 2016 in Cannes, France.
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BERLIN, GERMANY - FEBRUARY 11: Amal Clooney attends the 'Hail, Caesar!' premiere during the 66th Berlinale International Film Festival Berlin at Berlinale Palace on February 11, 2016 in Berlin, Germany. (Photo by Pascal Le Segretain/Getty Images)
WESTWOOD, CA - FEBRUARY 01: Amal Clooney arrives at the premiere of Universal Pictures' 'Hail, Caesar!' at Regency Village Theatre on February 1, 2016 in Westwood, California. (Photo by Gregg DeGuire/WireImage)
LONDON, ENGLAND - JANUARY 25: Amal Clooney seen leaving the Doughty St Chambers after a press conference on January 25, 2016 in London, England. (Photo by Neil Mockford/Alex Huckle/GC Images)
LONDON, UNITED KINGDOM - JANUARY 23: Amal Clooney seen leaving No 10 Downing Street after a meeting with David Cameron and Former President of Maldives Mohamed Nasheed, on January 23, 2016 in London, England.
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LONDON, ENGLAND - DECEMBER 03: Amal Clooney attends Charlotte Tilbury's naughty Christmas party celebrating the launch of Charlotte's new flagship beauty boutique in Covent Garden on December 3, 2015 in London, England. (Photo by David M. Benett/Dave Benett/Getty Images for Charlotte Tilbury)
HOLLYWOOD, CA - OCTOBER 26: Amal Clooney and George Clooney attend the premiere of 'Our Brand Is Crisis' at TCL Chinese Theatre on October 26, 2015 in Hollywood, California. (Photo by Jason LaVeris/FilmMagic)
LONDON, ENGLAND - OCTOBER 07: Amal Clooney arrives at The Frontline Club for her talk with Mohamed Fahmy on October 7, 2015 in London, England. (Photo by SAV/GC Images)
LONDON, ENGLAND - OCTOBER 05: Amal Clooney attends a press conference at Doughty Street Chambers on October 5, 2015 in London, England. Clooney is part of an international legal team seeking to release Maldivian President Mohamed Nasheed after he was was jailed for 13 years. The UN have found Nasheed's detention in violation of international Law. (Photo by Eamonn M. McCormack/Getty Images)
NEW YORK - SEPTEMBER 30: Amal Clooney seen out in Manhattan on September 30, 2015 in New York, New York. (Photo by Josiah Kamau/BuzzFoto via Getty Images)
NEW YORK - SEPTEMBER 29: Amal Clooney arrives at Lincoln Center for the New York Film Festival in green on September 29, 2015 in New York, New York. (Photo by Josiah Kamau/BuzzFoto via Getty Images)
Human rights lawyer Amal Clooney leaves the Maafushi Prison in Maafushi, some 27 km from the capital Male, on September 10, 2015. Human rights lawyer Amal Clooney attended a court hearing September 10 in the Maldives where state prosecutors have done a U-turn to appeal the conviction of former president Mohamed Nasheed. Clooney was at the Maldivian High Court along with Nasheed who is serving a 13-year jail term after a rushed trial that found him guilty of 'terrorism.' The charge relates to the ordering of the arrest of an allegedly corrupt judge when Nasheed was still president in 2012. AFP PHOTO / STR (Photo credit should read STR/AFP/Getty Images)
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"The worst thing that we can do as women is not stand up for each other," she told the crowd. "I'm ashamed as a woman that girls like Nadia [who was sold as a sex slave to an ISIS commander in 2014] can today have their bodies sold and used as battlefields, and I'm ashamed as a human being that we ignore their cries for help."
"If we keep up the fight for women's rights, there is nothing we can't do," she continued.
One month prior to Amal's moving speech, ET caught up with George on the red carpet at the Motion Picture Television Fund's 'Night Under the Stars' benefit in Los Angeles, where he couldn't stop gushing about his wife's "heroic" work.
"Of course I'm proud of her. Yeah, it comes with risk," he said of Amal's decision to represent Nadia. "You spend an afternoon with that young woman [Nadia], there's no way you couldn't stand up for her. She's so brave. She's the one who's the bravest because she's in the most dangerous [situation]. I think Amal's decision to [represent her] was, of course, heroic."
Hear more highlights from the interview in the video below!