In her ''big reveal' interview with Vanity Fair, Caitlyn - previously known as Bruce Jenner - said she was ''terribly disappointed and hurt'' at her four eldest children - Brody, Cassandra, Burt and Brandon - for refusing to take part in her E! reality TV series 'I Am Cait', and Brody, 31, isn't happy about it.
A source said: ''Brody is very annoyed over the way it was portrayed, as if he wasn't being supportive by refusing to be on a reality show. By Caitlyn's own admission, she was absent for much of Brody, Brandont and Cassandra's childhoods, and they were sidelined in favour of the Kardashians during her marriage to Kris (Jenner).
''They value their privacy, but it's a bit rich of her to be making these demands of them for the sake of improving ratings.''
Caitlyn's ex-wife Kris is also ''fuming'' over the way she was represented in the Vanity Fair article, in which the 65-year old former athlete said the 59-year-old Kardashian momager ''wasn't very nice'' and knew about her intentions to become a woman, which was partly why they split in 2013, after 23 years.
The 'Keeping Up With The Kardashians' star has strongly denied Caitlyn's claims and now the former couple's dispute is impacting the entire Kardashian family.
Sources told The Sun's Fabulous magazine: ''The Kardashian kids are all very close to their mum, and while they want to show support to Caitlyn, it puts the children in a very awkward situation.''