Michelle Trachtenberg

Mean girl?

Even someone related to a vampire slayer isn’t safe from the wrath of Lindsay Lohan.

Lindsay Lohan startled onlookers when she lashed into Michelle Trachtenberg, who starred on TV as Dawn, the sister of “Buffy the Vampire Slayer,” according to Star.

The “Mean Girls” star caused a stir at Miami Beach’s Shore Club recently when she spotted Trachtenberg across the room.

“Those two hate each other, and Lindsay started screaming, ‘Get her the [bleep] outta here!” an “eyewitness” told the tab. “She was threatening to get physical and actually fight Michelle, saying, ‘I’ll kick her [bleeping] [bleep]!”

Lohan reportedly left Shore Club shortly after the outburst.