I spotted Jennifer Love Hewitt’s character, Melinda Gordon, wearing black hearts in two recent episodes of CBS’s The Ghost Whisperer.
So, is Melinda a Joan Jett fan? You be the judge.
Exhibit A: “Dead Eye,” Season 5, Episode 18, original air date: April 9, 2010

Jennifer Love Hewitt's Melinda Gordon wearing a white skirt covered in black hearts. Property of CBS.
Exhibit B: “Lethal Combination,” Season 5, Episode 19, original air date: April 30, 2010

Jennifer Love Hewitt's Melinda Gordon, wearing a top covered in black hearts. Property of CBS.
Source: My TV.