Lady Gaga's new Mayhem merch is ripping off a logo that Lost International has had trademarked since 2015, a new lawsuit claims.

a prominent surf and lifestyle brand, has filed a $100 million trademark infringement suit against Lady Gaga, alleging some of her Mayhem designs and merchandise rip off one of its logos.

The suit contends Lady Gaga’s use of the logo is causing confusion with the surf brand ... Lady Gaga’s album and tour clothing, left, and Lost’s clothing, right. Images from court documents ...

Shortly after, she started selling T-shirts and other items of clothing with the ... and the surf brand (right), which has been using the logo for nearly 40 years, trademarking it in 2015.

The California-based surf brand Lost International claim that the singer is ripping off a trademark they've had since 2015 Lost International is suing Lady Gaga for using a logo on her new Mayhem ...

Lady Gaga has been hit with a trademark infringement lawsuit from a California surf company who claims she ripped them off with the Mayhem logos featured on her new merch. Lost International ...