Did Caitlyn Jenner Just Let It Slip That Kylie Jenner Has Already Given Birth?

Kylie Jenner is keeping her cards close to her chest when it comes to her rumoured pregnancy. In fact, fans are convinced that she's already given birth and is just waiting for the right moment to make a big reveal.

And now Caitlyn Jenner has appeared to let the cat out of the bag whilst getting flustered over a question about her grandchildren.

Appearing on Piers Morgan's Life Stories, the former Olympian tripped over her words when asked how many grandkids she has, fuelling speculation that she had to have a quick think about how many she was allowed to reveal.

"I've got 12... 13 grandchildren," she said, which was a mistake.

She actually has 11 - three from daughter Cassandra, one from son Burt, one from son Brandon, three from step-daughter Kourtney Kardashian, two from her sister Kim and one from their brother Rob.