Meghan Markle has “has humiliated her critics and humbled the royal family,” according to a biographer, ahead of her 40th birthday.

Meghan’s next move, according to Tom Bower, is to “conquer the world”

Furthermore, Tom, an investigative writer, feels Meghan will be “thrilled” by her “phenomenal triumph.”

Meghan is regarded as one of the world’s celebrities by her biographer.

“She has humiliated her critics and humbled the Royal Family,” he said in a column for The Sun.

“Her next steps are to conquer America, then the world.

“Critics carp that Meghan’s megalomania has no limits. Her admirers retort that she is purposely fulfilling the American Dream.”

Tom is recognized for penning unflinching biographies that hold no punches.

He claims that she and Prince Harry are living an ideal lifestyle in Los Angeles just 18 months after leaving the UK and their duties as working royals.

Bower added: “Blowing out the 40 ­candles on her birthday cake on Wednesday, Meghan Markle will be rightly thrilled about her phenomenal triumph.

“Unlike many women who fear toppling over the cliff edge at 40, Meghan stands in the global spotlight as one of the world’s superstars, convinced her destiny will soar towards greater fame and fortune.

“Within just 18 months of snubbing the Queen and abandoning Britain, Meghan and Prince Harry are ­enjoying an enviable lifestyle in their £11 million, nine-bedroom, 16-bathroom palace north of Los Angeles.

“Financed by multimillion-dollar contracts with Netflix, Spotify and a four-book publishing deal, she is sitting in the sunshine beside a huge swimming pool in a five-acre, ­manicured garden, plotting how to realise her breathtaking ambitions.

“At 40, Meghan rightly feels that she is at the height of her powers, the master navigator of her own ­narrative, and Prince Harry’s fate.

“At her milestone age, the Duchess of Sussex can congratulate herself on defying all the odds.”

Tom has already stated that Meghan may run for President in the future.

Meghan Markle is said to be hiring Oprah Winfrey’s party planner for her 40th birthday celebration this week.

The Duchess of Sussex has allegedly tasked Colin Cowie with organizing the landmark birthday celebration at her and Harry’s £11 million house in Santa Barbara, California.

It is intended to be a low-key celebration on their large £11 million home, with ample privacy to entertain their guests with food and wine supplied locally.

Cowie is renowned for his lavish style and has been cited as saying, “the equation for the gold standard of service isn’t 1+1=2. It’s 1+1=3. What can you do to stay ahead of the curve?”