Chanel

“I just think it’s so fun when you do fashion with a good cause,” Emma Roberts told InStyle.com before joining Emily Mortimer, Rachel Bilson, and more for Chanel’s benefit supporting the Natural Resources Defense Council (NRDC) this weekend. Held at the Los Angeles home of art dealer Larry Gagosian, formerly owned by acting legend Gary Cooper, the event raised awareness and funds to support the organization’s mission of saving the earth’s resources and environment. While Bilson wandered around admiring Gagosian personal art collection, most guests gathered pool-side to sip on Champagne and snack on hors d’oeuvres in the balmy night. As the sun set over the magnificent garden, Patti Smith and Karen O from the Yeah Yeah Yeah’s performed “Because the Night” and “Perfect Day.” Bella Heathcote, who admitted that she squealed when she heard Smith was going to perform, really got into the music, dancing by the side of the stage. After the performance, guests took their seats at long tables covered in white linens under the starry sky to enjoy a vegetarian meal created by Travis Lett of Gjelina. Click to see more.

— Carita Rizzo

The Odeon restaurant in New York turned into a mini Chanel runway at the 8th Annual Chanel Artists Dinner, when guests including Alexa Chung and Mad Men‘s Kiernan Shipka wore straight-off-the-runway looks for their night out to celebrate the Tribeca Film Festival. “It’s fabulous to wear Chanel,” said 13-year-old Shipka, who chose look 24 from the label’s spring 2013 show. “It’s truly amazing.” Chung agreed: “It has so much history and class that the clothing feels like that,” she said. Though, wearing Chanel wasn’t a requirement for the evening, which was also shared by Uma Thurman, How I Met Your Mother star Josh Radnor, rising star Mickey Sumner, and the festival’s co-founder Robert DeNiro. Taraji P. Henson enjoyed the night—pinot noir in hand—in a vibrant blue design by Stella and Jamie. Click the photo to see more.