Caitlyn Jenner claims to have 20 grandkids but I’m A Celeb fans spot ‘maths doesn’t add up’

CAITLYN Jenner revealed she had 20 grandchildren on I'm A Celebrity last night - but the announcement has left fans insisting the maths just doesn't add up.

Kardashian-watchers say the 70-year-old star, who has six children from three marriages plus four step-children, is still two kids short.

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Kate Garraway asked the American how many grandchildren she had, with Cait replying that she would have 20 by the end of the year.

But one viewer puzzled: "Caitlyn Jenner saying she’ll have 20 grandchildren by December - but my maths isn’t adding up. What’s going on?"

Many missed the fact her son Brandon is expecting twins with his girlfriend Cayley Stoker - but that still leaves two short.

So, is there a mystery Kardashian-Jenner baby in the pipeline - or can Caitlyn simply not keep track of her sprawling family?

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She has two children from her first marriage to actress Chrystie Crownover - Burt, 41, and Brandon, 38.

Burt has two sons, William and Bodhi, with longtime girlfriend Valerie Pitalo.

Meanwhile, Brandon has a daughter called Eva from his marriage to Leah Felder and has another two on the way with Carley.

Brody, 36, Catilyn's son with songwriter and former beauty queen Linda Thompson, doesn't have any.

Over in the wider Kardashian-Jenner family, 39-year-old Kim has four children with Kanye West - Psalm, North, Saint and Chicago.

Meanwhile, Kylie Jenner, 22, has Stormi from her relationship with rapper Travis Scott.

Khloe Kardashian, 35, has True with basketball star Tristan Thompson while Rob Kardashian, 32, is dad to daughter Dream with ex Blac Chyna.

Kourtney Kardashian, 40, has three children - sons Mason and Reign and daughter Penelope - with Scott Disick, while Kendall Jenner has none.

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All of which adds up to a grand total of 18 grandchildren for Caitlyn.

So, where are the remaining two coming from?

Hopefully, Kate Garraway will be crunching the numbers in the hours of downtime that life in the I'm A Celebrity jungle provides and can find out for us.

Talking to the Good Morning Britain host last night, Caitlyn explained that her children still call her Dad despite transitioning to being a woman.

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She explained: "My kids all call me Dad. Kendall asked me first and I said: 'Dad - I’m your dad and I’ll always be your dad till the day I die.'

"But what they’re really good at which shocks me all the time is when they’re talking about me, 'My dad she…' and it’s tough to change the pronoun in the middle of it."

Referring to her former name, she added: "Bruce raised them and Caitlyn is enjoying their life with them."