Stephanie Pratt is pissed off!

On Thursday night, the former Hills star took to Twitter and Instagram to rant about her “poisonous” family while taking a shot at her brother, Spencer Pratt!

Related: Stephanie Admits To Smoking Crystal Meth Daily As A Teen

The 31-year-old posted:

Oh wow…

The father-to-be hasn’t directly responded to his upset sis, but he did share to Twitter on Friday:


Is Steph still mad about learning about Spencer and Heidi Montag‘s baby news online?? What gives, bbs??

[Image via Instagram.]

More – 

Stephanie Pratt Seemingly Targets Brother Spencer In Rant About Her ‘Poisonous’ Family!