Complex sentence: The jacket was designed by Deborah Nadoolman Landis, (director John Landis'wife) who had also designed Indiana Jones's jacket in "Raiders of the Lost Ark" and many others.
Split into simpler sentences: The jacket was designed by Deborah Nadoolman Landis, wife of director John Landis. Landis had also designed Indiana Jones's jacket in "Raiders of the Lost Ark" and many others.