Rachel Bilson wears her earrings for a cause! The actress (and InStyle contributor) teamed up with JewelMint, the jewelry collection designed by Kate Bosworth and stylist Cher Coulter, to kick off the brand’s new charity initiative—the JewelMint Celebrity Guest Curator Series. With this project, Bilson is the face of one piece of jewelry for the collection, and 50% of sales of her piece will be donated to charity. “I am so privileged to be working on this project with Kate as I'm a huge JewelMint fan,” Bilson told us. InStyle scored an exclusive preview of her pick—gold-plated earrings with amethyst stones named the Rachel Earrings—which will be available for $29.99 (that includes shipping and tax). Proceeds will be donated to Bilson's favorite charity, Invisible Children, an organization dedicated to stopping the abduction of children for use as child soldiers in Uganda. “Working with JewelMint to support such a worthy cause means so much to me,” Bilson said. The earrings will be available for a limited time only—April 15th through June 14th—but as an InStyle reader, you can score the accessory starting today by clicking here.