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.
On his radio show on January 16, 2008, Howard Stern mentioned that TMZ reported that Grace was pregnant. On August 26, 2008, Grace gave birth to a baby girl. David Spade, who had a brief relationship with Grace, was confirmed as the father.