EWWW! KOURTNEY KARDASHIAN HAS TRIED HER OWN BREAST MILK!

Don't knock it until you try it.

Khloe Kardashian announced on Twitter that her sister Kourtney, who gave birth to baby boy named Mason Dash Disick in December, has tried her own breast milk.

"Kourt just admitted that she tasted her own breast milk. Ummmm TMI," Khloe wrote. "Wow my sister has changed. She used to whip her boobs out for no reason. Now she does it to feed her child."

Kourtney gives every sign of being very happy with the transformation. On Wednesday she tweeted, "I have two Valentines this year. The loves of my life," referring to Mason and his daddy, Scott Disick.

The Kardashian sisters have been in the spotlight a lot recently. Their clothing collection will be featured during Fashion Week in New York City, Kim cheered on her boyfriend, Reggie Bush, as he helped the Saints win the Super Bowl, and Khloe admitted she wants to make a sex tape.