They may be blood relatives, but 'The Hills' star Stephanie Pratt had some choice words about her brother Spencer Pratt and his wife, Heidi Pratt in a recent interview.

During an episode of her 'Pratt Cast' podcast, she ripped into the couple ahead of 'The Hills' reboot which is returning to MTV soon.

"No one knows the real Heidi,” Stephanie told her co-host Wells Adams. “Before the new Hills, the Beginnings, my mom, my brother and I all sat down and we said, ‘We will not let this ruin our family again.’”

Stephanie claimed that at a recent photo shoot for the show, Heidi offered everyone a glass of champagne except for Steph.

“I’m done. I don’t care. I’m not protecting them anymore,” she said. “You have to put on your oxygen mask before you put on someone else’s … That’s what I’m doing right now. If my mom can’t handle this, that’s her issue. I cannot help her.”

She then added:

“The behavior that I’ve seen … I’m done. This is why I moved to London. They are the most toxic people I’ve ever met. They are Bonnie and Clyde till they die. So if they say, ‘The sky is black,’ all of us are morons for saying, ’It’s blue.’ … I’m going to expose them for who they are.”

Stephanie is currently a series regular on the U.K. reality television show, 'Made In Chelsea.'