The simple reason Princess Charlotte's net worth is higher than either of her brothers'.

There are a lot of reasons why being a woman in the British royal family is a bit like drawing the short straw.

Having your wardrobe compared to your sister-in-law’s every time you step out of the palace. Always having to be ‘ladylike’ while the men learn to fly military helicopters. Being asked when you’re going to have babies etc.

Take the Queen too. If The Crown was accurate, she was the one who had to break her sister’s heart and reign in dodgy Prime Ministers while her husband Prince Phillip sailed around the Commonwealth on an unofficial lads tour.

But when it comes to which of the next generation of royals is worth the most, it appears it pays to be female. Very well.

According to figures estimated by Reader’s Digest, the only daughter of The Duke and Duchess of Cambridge Prince William and Kate Middleton is worth more than everyone else in her immediate family.

The publication reports Princess Charlotte has a net worth of over $6.7 billion, based off how much she’ll bring into the British economy. Not bad for a three-year-old.

Speaking of cute royals, we took a look back at the very adorable young Prince William and Harry below. Post continues after video.

By comparison, older brother Prince George is said to be good for $4.7 billion, and The Sun estimate three-month-old Prince Louis could inject up to $176 million into the British economy.

The reason the Princess’ pile of dosh is considerably higher than her brothers’ comes down to one simple reason.

It’s called ‘The Charlotte Effect’ and essentially it’s another way of saying there’s more money in girls’ clothing than there is in boys’.

Much like the other women in the royal family – Kate, Meghan Markle, Pippa Middleton and the late Princess Diana – what Princess Charlotte wears directly translates into commercial sales.

With a Telegraph poll finding one in five parents said the young royal was a style icon for their daughters, almost anything Princess Charlotte wears or plays with, sells out within days, if not hours.

What’s even more appealing is how Kate dresses her daughter in more affordable department store brands, such as the $30 John Lewis yellow cardigan which promptly sold out after Princess Charlotte wore it in her second birthday portrait.

A post shared by Kensington Palace (@kensingtonroyal) on May 1, 2017 at 2:02am PDT

As for why Princess Charlotte and Prince George have greater net worths than their parents and aunty and uncle (Reader’s Digest reports both Prince William and Harry are worth $53.9 million each, while Kate sits at $13.4 million and Meghan at $6.7 million), again, buying clothes for kids is far more fun, and less expensive than adult’s clothing.

The only downside to the young royals’ big bank accounts is, they won’t see a penny until they’re over the age of 18.

Somehow, we think they’ll be OK.

Does royal fashion influence your own style? Would you buy something because a royal wore it?