Joan Jett’s upset about a new line of lingerie by Hot Topic. She’s claiming the line ripped off her “Blackheart” trademark, as well as her style. Jett’s record label claims Blackheart lingerie is “blatant trademark infringement” because Jett popularized the term “Blackheart” with her band Joan Jett & the Blackhearts, and she personally made the “rock and roll chick thing” mainstream. Blackheart Records is suing for trademark infringement and unspecified damages, as well as an injunction blocking sales of the lingerie. Hot Topic released a statement saying they hold a few trademarks for the Blackheart brand that go back a decade.