Did Stephanie Pratt Just Slam Brother Spencer?

Sounds like there's trouble brewing in the Pratt family.

The Hills star Stephanie Pratt took to Instagram to share some wise words with her followers. Posting a text image that read, "Some of the most poisonous people come disguised as family," Pratt wrote, "They never cease to amaze me -good thing I always pray for my enemies."

The 31-year-old then followed up her Instagram post with a tweet, writing, "I have protected people over the evil things they have done – & I'm tired of it- tired of my parents living in denial. Time 2 tell the truth."

And while Stephanie didn't drop Spencer's name, it seems pretty clear who she's talking about. The two have a troubled past, likely in part due to her former friendships with Spencer's reality TV enemies Lauren Conrad, Lo Bosworth, and Audrina Patridge.

But if you needed more proof that Stephanie's post was about her brother, who became somewhat of a villain on The Hills with wife Heidi Montag, just take a look at her reply to one Twitter user.

"Having an extremely evil sister, I get you 100%!!  I just hope this isn't about your brother.  He has a good side too," the commenter wrote in response to Stephanie's original tweet.

"No he doesn't," Stephanie tweeted back.

Ouch.

So how has Spencer reacted? Hours later, he tweeted, "Can't beef with peeps who have mental problems."

The 33-year-old later tweeted again, writing, "Fools out here dosed up talking reckless."

E! News confirms that Stephanie and Spencer have had issues for years. The celeb news site noted that their latest public spat came when Stephanie spoke with Heat magazine about how she learned about her brother and sister-in-law's pregnancy from the internet.

"It was on my birthday and I literally just saw it on my phone," she recalled. "I was mad. I haven't spoken to him since."

She added, "I have a feeling [my whole family] knew. I think I'm literally the only person who didn't. I just felt really left out. I don't feel part of my family."

Maybe the two will be able to make up before Spencer's son arrives?

Yeah, probably not.

Wonder what the rest of your favorite MTV reality stars up to? Here's what the cast of Laguna Beach and The Hills look like today.