Jillian Grace Harper (born December 20, 1985) is an American model. She was Playboy's Playmate of the Month for March 2005. She landed her gig with Playboy after appearing on The Howard Stern Show then flying to Chicago for test shots with Playboy. This occurred soon after graduating from high school in the town where she grew up, Washington, Missouri.
In subsequent appearances on the Howard Stern show, Grace talked about her briefly dating comedian Pauly Shore and 7th Heaven actor David Gallagher.
Grace reappeared on the Playboy scene with a Playmate Xtra feature on Playboy's internet Cyber-Club for the month of December 2007. It featured 4 new photo sets and 4 new videos.