I'm A Celebrity star Caitlyn Jenner has revealed the cute nickname given to her by her grandkids after her transition.
The athlete-turned-reality star, 70, is currently in the Australian jungle competing on the ITV show, and last night's episode featured a chat about familes.
Caitlyn, who came out as a trangender woman in 2015, was asked what her kids, including Kendall and Kylie Jenner , call her now.
She explained they still call her "Dad" but use the pronoun "she", but said it must have been hard for them to adjust after her transition.
The former Olympian then went on to reveal her grandkids haven't experienced the same confusion and simply call her "Boom Boom".
During a chat with the other campmates, Caitlyn said: "They [the grandchildren] came up with Boom Boom...
"So it kind of stuck, It was easy for them to stay. Little Stormi [Kylie Jenner's daughter] is like 'Boom Boom!... Boom Boom's here!'"
Caitlyn said she has 20 grandchildren, including Kylie's little girl Stormi, and there are two more on the way as son Brandon is expecting twins with his girlfriend Cayley Stoker.
However, the revelation confused fans last night as they could only count 18, including the unborn twins.
Kourtney Kardashian has three kids, Mason, Penelope and Reign with ex-parnter Scott Disick.
Younger sister Kim Kardashian has just welcome her fourth child, Psalm, with rapper Kanye West .
The power couple have three other children - North, Saint and Chicago.
Khloe Kardashian is mum to True, the daughter of Tristan Thompson, while Rob Kardashian and Blac Chyna have little Dream.
Kylie gave birth to daughter Stormi Webster in February 2018, who she has with rapper Travis Scott, but Kendall Jenner has no kids yet.
From Caitlyn's first marriage, Burton "Burt" Jenner has two kids, and daughter Cassandra "Casey" Marino has three.
Brody Jenner doesn't have any yet, but Brandon Jenner has one as well as the twins on the way.
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