Did you hear? Kristin Cavallari, whose (baby) due date is fast approaching, is on the cover of the December/January issue of American Baby. In a new video promoting the issue, Kristin tells a story about seeing a penis.

“When we found out the sex of this baby,” Kristin says in the video (which you can watch here), “we had a 3D ultrasound, and 100 percent, we saw a penis.”

She continues:

But now, you can do a blood test. So about a week and a half later, I get a phone call from the woman, and she says, “So do you want to know the sex?” And I said “Yeah, but you know, we already saw a penis, so we know it’s a boy.” And she was like, “Actually, it’s a little girl!”

And I was like, “What? Are you sure?”

It is a little girl; Kristin announced the news in July by posting a photo of tiny pink sneakers.

This has been 500 Days of Kristin.

[Photo via Getty]