Now that Prince Harry and Meghan Markle have left royal duties and Princesses Eugenie and Beatrice are happily married and starting families, there continues to be a void of up-and-coming royals. But according to one royal expert, that may soon change: the queen's granddaughter, Lady Louise Windsor.

Remember Lady Louise as the flower girl at the wedding of Prince William and Kate Middleton? Louise, the daughter of the Queen's youngest son, Prince Edward, Earl of Wessex, and Sophie, Countess of Wessex, has kept a fairly low profile over the years. But those who tuned into the BBC documentary Prince Philip: The Royal Family Remembers last week to watch her talk about her late grandfather noted how tidy and well-spoken the young royal has become since we last saw her noted how orderly and well-spoken the young royal had become since we last saw her.

And according to royal expert Phil Dampier, she is the next royal to watch. Speaking to The Telegraph, Dampier explained that Lady Louise is the "secret weapon" of the royal family and "exactly who the queen relies on." He even speculated that Lady Louise, who turns 18 in November and is eligible for the title of crown princess, might take over some of the royal responsibilities that the queen has carried: "There is a huge amount of work there," he said.

Lady Louise is also known as a carriage driver, a hobby that bonded her with her late grandfather, Prince Philip. Hello! Magazine, she spoke about the sport and their relationship with each other, saying that her grandfather's deep involvement in her carriage driving was "lovely" but "a little scary":

"It's like he invented this sport, but it's incredible to be able to learn directly from him and definitely our I think it's brought us closer together. ...... When the competition was over, he would always ask me how it went and his eyes would light up because he gets so excited when he talks about it"

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Keep an eye on Lady Louise. She seems ready to take on quite a legacy herself.