Meghan Markle‘s brother Thomas Markle Jr. has opened out about the moment he told Prince Harry that his ‘shallow’ sister will ‘ruin his life’ in a preview The Big Brother.

The Duchess of Sussex’s estranged half-brother, Thomas Markle Jr, is already causing havoc ahead of his appearance on the star-studded Australian reality program.

The 55-year-old stated in the show’s startling teaser that he warned Harry about Meghan.

He said, “I told Prince Harry, ‘I think she’s going to ruin your life.'”

“She’s very shallow.”

He also refers to himself as “the biggest brother of all.” Despite his relationship with Meghan, neither he nor his sister Samantha were invited to Prince Harry and Meghan’s wedding in 2018.

“I’m Meghan Markle’s brother, I’m the biggest brother of them all,” the 55-year-old brags.

He hadn’t seen the former Suits actress in almost seven years before the wedding.

In addition, Meghan’s father, Thomas Markle, who just broke his silence following the birth of his granddaughter Lilibet Diana, was not present for the wedding.

Markle Jr allegedly wrote the duke a letter at the time, telling him it was “not too late” to change his mind, and that his half-sister was “obviously not the right woman” for him.

The window fitter has previously called his half-sister a “phony” and a “jaded, shallow, conceited woman” in the press.

Meghan’s family squabbles are well known, with her father utilizing TV chat show interviews to get her to contact him.

Thomas Jr. also chastised Meghan for cutting off their father when he admitted to being paid to pose for paparazzi photos distributed to news agencies across the world.

In a shocking interview with Oprah Winfrey in March, Meghan said that her estranged father lied to her when she inquired if he had talked to the press.

Markle Jr. previously spoke out about being left off the invitation list.

The father-of-two said: “I’m not bitter, just baffled. It’s hurtful given how close we once were.

“I’m confused and a little distraught because here is a person knowing the position she’s in and knowing the scrutiny she’s under and yet she has forgotten her flesh and blood.”.

It is not the first time Markle Jr has utilized his family ties in the media; in 2019, he competed in a celebrity boxing fight under the alias “The Duke”

The same year, he appeared in a beer commercial alongside a Meghan Markle impersonator.

Big Brother VIP has already been marred by scandal, with participant Katie Hopkins having to be deported before ever entering the house.