Kyle MacLachlan, Naomi Watts, Isabella Rossellini and other collaborators of David Lynch mourned the filmmaker's death on social media.

Kyle MacLachlan — an actor who frequently collaborated with David Lynch — shared a lengthy, heartfelt tribute to his friend on Instagram after the iconic filmmaker’s death at the age of 78 on Thursday.

David Lynch ‘s FBI agent Dale Cooper from Twin Peaks, Paul Atreides from Dune and Jeffrey Beaumont from Blue Velvet, Kyle MacLachlan, took to social media to express his sorrow over the loss of the filmmaker who made him a leading man across TV and film.