Barker Hangar in Santa Monica, Calif. was abuzz last night as the stars gathered to support the fight against breast cancer. Jaimie Alexander, Kellan Lutz, Jessica Roffey, Sophia Bush, and Emmanuelle Chriqui (pictured above) were joined by Amber Valetta, Alessandra Ambrosio, Adrian Grenier, Busy Philipps, Jordana Brewster, and more at the Pathway to the Cures for Breast Cancer: A Fundraiser Benefiting Susan G. Komen event. Presented by Relativity Media and Pathway Genomics, the evening raised funds to provide affordable hereditary breast cancer testing and to eradicate the disease. During the party, Pathway announced their plans to donate $10 million in BRCA genetic tests for women who can’t afford the test.

“It’s nice to come out in support of such an important initiative. The fact that 1 in 8 women is affected by breast cancer in their life is not an acceptable statistic,” Bush tells InStyle. “When companies choose to be proactive I’m just incredibly grateful because they’re going to save lives.” Chriqui also expressed the significance of showing up for the event. “Susan G. Komen has done so much for breast cancer awareness, so you never need to twist my arm to come and support their cause,” the actress says.

Kesha PerformanceTodd Williamson/Invision for Instyle/AP

For the occasion, the space was transformed into a luxe living room where guests could snap pictures in an Instagram photo booth, indulge in Absolut Elyx cocktails and One Hope wines, hydrate themselves with Evian water, and snack on small bites like local handmade toffees by McFaddy Candy Co. and delicious charcuterie and cheeses. To top off the evening, Kesha gave a glitter-filled performance of several of her hits including “Timber” and “Your Love is My Drug,” which got everyone dancing. “I loved seeing Kesha, I was right up against the stage.” Valetta says. “I knew all the words to the first song!”

Despite the fun atmosphere, guests were really there to support the worthy cause. “I was really excited to hear what these two organization are doing. Both my mom and two grandmothers all had breast cancer,” Valetta shares. “Beside prevention and self-checking and doing your mammograms, the biggest way to help is by making genetic testing available for everybody, which is what this group is aiming to do.”

Check out more photos from the event and the rest of this week’s hottest parties in our gallery!