"OMG! Is this real?" she exclaimed on Snapchat upon hearing the news.
Meanwhile, ET spoke exclusively with Lawrence about why watching the lives of Kim's family was able to put her at ease.
"The Kardashians are more comforting to me, I think," the 27-year-old actress shared. "I've been watching them for 11 years, so I grew up with them, and I know all of them personally."