"We have spent our lives together and it has been full of joy and warmth every day," Wintead wrote on Instagram alongside a picture of herself giving Stears a kiss on the cheek. "We’ve decided to move on from our marriage, but we will stay best friends and collaborators for all our days. We are still ride or die, just in a different way now. I love you always, Riley."
Meanwhile, McGregor and 51-year-old Mavrakis, a production designer, have been married since 1995. The two have four children together -- 21-year-old Ciara, 16-year-old Jamyan, 15-year-old Esther and 6-year-old Anouk.