A pregnant Kourtney Kardashian and her sister Khloe popped by Usmagazine.com's New York offices to promote their new E! series Kourtney & Khloe Take Miami, airing every Sunday at 10 p.m./ET.

And Khloe couldn't help but heckle Kourtney for kissing girls on the show.

In the video (watch above), Khloe asks her pregnant sister if she's going to make out with any of the "Dash girls" who work at their Miami clothing store. "Khloe, that's sick," Kourtney shoots back.

"Just kidding," Khloe teases. "She's pregnant now."