Meghan Markle has not announced any plans to write a biography, but if she does, it could become more successful than Prince Harry's memoir Spare.

While speaking with Express, literary agent Peter Cox said that a biography by the Duchess of Sussex would be a huge publishing success. In fact, it could be bigger than Prince Harry's book.

"Not necessarily in the UK, because the public doesn't like her here. But in America, it will sell like hotcakes, provided she finds a ghostwriter as good as Harry's. Because her story is a classic fairytale, and Americans are suckers for fairytales," he said.

When asked what he thinks Markle's book will be all about, Cox said that it would cover a range of topics from her humble beginnings and her broken home to finding true love in Prince Harry.

"Quite literally - the prince of her dreams. That is pure Disney. But then, she doesn't encounter just one wicked stepmother - it's the whole darn family who hates her! The might of the British establishment is determined to split them apart. But... true love conquers all! That's the Hollywood pitch, and it will sell millions of books and quite possibly a Netflix series, too," he said.

Following the release of Spare, Prince Harry managed to sell over 400,000 printed copies in the United Kingdom alone. His book also received massive sales in the United States and other parts of the world.

In fact, Spare also became a best-selling book in record time. The memoir includes stories about the royal family from Prince Harry's perspective.

So, if his wife were to release a biography, she would also most likely include stories from her time as a senior working royal. However, there are no immediate plans for Markle to follow in Prince Harry's footsteps.

But if it happens one day, Cox's prediction could come true. After all, Markle also has a huge following even though she also has a number of critics around the world.

Still, her fan base has been loyal to her. And they have also been defending her in her absence. Unfortunately, her critics have not also stopped slamming her for her every move and questioning her intentions as to why she married Prince Harry in the first place.