'Teen Mom' star feuds with Kourtney Kardashian on Twitter

Farrah Abraham and Kourtney Kardashian have engaged in a Twitter feud.

The Teen Mom star tweeted the reality star in the wake of her announcement that she is expecting a second child with Scott Disick.

"Im Shocked Kourtney Kardashian is pregnant again, Did she not learn anything from TEEN MOM? Maybe its a fake pregnancy like kims wedding. SAD (sic)," wrote Abraham.

Kardashian was baffled by Abraham's tweet, given that she is in her thirties.

"Why would I have anything to do with teen mom? I'm 32 years old! I may look young honey, but don't get it twisted. :) (sic)," Kardashian responded.

On Saturday (December 3), Abraham clarified her comments, saying that she thinks the reality star needs to learn to take her relationship with Disick more seriously before having more children.

"4 all who misunderstood: regards to kourtney K.~ I hope she takes her relationship w/her boyfriend more serious 4 their children-takecare (sic)," she wrote.

Kardashian and Disick are already parents to son Mason.

The couple can be seen on Kourtney & Kim Take New York, which continues Sundays at 10pm on E!.