Big Brother VIP: Thomas Jr pens letter to Meghan Markle and Harry

By Ali Daher For Daily Mail Australia

Thomas Markle Jr. famously wrote a letter to Prince Harry pleading for him to not marry his half-sister Meghan in April 2018.

And now, a new trailer for Channel Seven's Big Brother VIP sees Thomas, 55, sitting in the diary room announcing plans to write them another letter.

'You know I'm famous for writing letters,' Thomas explains, while seated alongside former Australian Survivor contestant Luke Toki.

Big Brother VIP first look: Thomas Markle Jr. announces he is going to write his half-sister Meghan Markle and Prince Harry another letter in a new trailer for the upcoming reality show 

'I'm gonna write a letter to Meghan,' he announces before he is seen putting ink to paper.

'Dear Meghan and Harry… The first thing I want to say to both of you…' he begins, trailing off. 

Elsewhere in the teaser, US star Caitlyn Jenner shares her trans journey with Toki and Imogen Anthony.

Not again! A sneak peek at the upcoming season of Big Brother VIP sees Thomas, 55, sitting in the Big Brother diary room before announcing plans to write the royals another letter 

Getting it off his chest: 'You know I'm famous for writing letters,' Thomas explains, while seated alongside former Australian Survivor contestant Luke Toki 

Busy busy: 'I'm gonna write a letter to Meghan,' Thomas announces before he is seen putting ink to paper. 'Dear Meghan and Harry… The first thing I want to say to both of you…' he begins, trailing off

'You've probably never met anybody who is trans?' Caitlyn, 71, is heard saying to Luke, before adding, 'Let me see if I can try to explain. Are you right-handed or left-handed?

'Right-handed,' replies Luke.  

'Why are you guys right-handed and me left-handed?' asks Caitlyn. 

Candid: Another clip sees Caitlyn Jenner, 71, (pictured) share her trans journey with Toki (left)

Open: 'You've probably never met anybody who is trans?' Caitlyn, 71, is heard saying to Luke, before adding, 'Let me see if I can try to explain. Are you right-handed or left-handed?

Costars: Married At First Sight's Jessika Power is also set to appear on the upcoming series

'Well, it's just the way we were born,' responded Luke, leading the group to a collective 'aha' moment.  

Thomas will star on Big Brother VIP alongside Omarosa Manigault Newman, 47, a former advisor to Donald Trump; and a hand full of Australian personalities. 

Also appearing on the show is Kyle Sandilands' ex-girlfriend Imogen, 30, NRL star Matt Cooper, 42, and model Ellie Gonsalves, 30. 

Game on: Also appearing on the show is Kyle Sandilands' ex-girlfriend Imogen Anthony, 30, NRL star Matt Cooper, 42, and model Ellie Gonsalves, 30 (pictured)

Meanwhile, in the first-ever promo for Big Brother VIP, Thomas claimed he'd 'warned' Prince Harry, 36, about his sister before their marriage.

'I'm Meghan Markle's brother, I'm the biggest brother of them all,' Thomas said while introducing himself in the video. 

He then added: 'I told Prince Harry, I think she's going to ruin your life. She's very shallow'. 

Thomas does not have a relationship with his famous younger sister, who is married to Prince Harry, Duke of Sussex.

Big Brother VIP is scheduled to air later this year on Channel Seven

No relationship: Markle Jr. does not have a relationship with his famous younger sister, who is married to Prince Harry, Duke of Sussex. Pictured: Prince Harry and Meghan Markle