Meghan Markle's Brother Tells Prince Harry Not to Marry His Sister

Meghan Markle's elder brother has penned an extraordinary letter in which he urged Prince Harry to cancel the upcoming royal wedding.

The handwritten note by Thomas Markle Jr., 51, tries to settle old scores by saying that his sister had turned her back on her family and abandoned their father, whom he claimed had gone into debt to support her acting career.

The letter, published by In Touch magazine, directly addresses the prince, pleading with him that "this is the biggest mistake in royal wedding history. Meghan Markle is obviously not the right woman for you.

Prince Harry and his fiancee Meghan Markle attend a service on ANZAC Day at Westminster Abbey in London on April 25. Her half-brother has penned a critical letter warning the prince not to marry her. Eddie Mulholland/Pool via Reuters

"Meghan's attempt to act the part of a princess like a below C average Hollywood actress is getting old."

The letter also laments how their father has not been invited to the wedding and has been left broke in Mexico over "mostly her debts."

"It's very apparent that her tiny bit of Hollywood fame has gone to her head, changing her into a jaded, shallow, conceited woman, that will make a fool of you and the royal family heritage," he wrote.

Thomas Jr. is a window fitter from Oregon and shares the same father as the royal bride-to-be, whom he has not seen since 2011. He has had brushes with the law, having been arrested in January 2017 for allegedly holding a gun to his girlfriend's head during an argument, although the charges were later dropped.

It's not the first time he has had harsh words to say about his half-sister. Last month he told The Mirror that she had "forgotten her roots" and claimed members of her family were not invited to the nuptials taking place on May 19, even though 1,200 members of the public were to attend.

It was reported on Thursday that the guests, including inner city youth workers and community leaders from deprived areas in the U.K., would have to bring their own picnics to Windsor Castle.

Saeed Atcha, 21, the founder of the Bolton-based youth magazine Xplode, told The Guardian the disadvantaged people his charity helped did not understand the decision.

"They were saying how come they have this money and you have to bring a picnic. I am of the same opinion. It's unfathomable."

"There's a McDonald's (nearby) but I'm not sure I'll be able to bring in a filet meal. Maybe there will be a U-turn," he said.