They may be labelled the Kartrashians but when it comes to making cash the Kardashians are up there – good role models for H&M to follow, if they wish.

Meghan Makeup sounds a winner, though TV reality show Keeping Up with the Sussexes would be self-defeating.

Gwyneth Paltrow shows the way with her £200million wellness and lifestyle Goop empire, but maybe avoid Gwynnie’s candle called This Smells Like My Vagina.

Then there’s the world’s wealthiest power couple, George and Amal Clooney. Just become a leading human rights lawyer, and a Hollywood A-lister, and you’re there. Simple.

Music stars Beyonce and JayZ have made a mint from their Roc Nation entertainment agency... so that’s Meghonce and HayZ.

The royal couple could follow in the footsteps of the Kardashians with their own reality TV show

The Beckham family are a good example of lucrative branding (but steer away from fashion, right, Victoria?)

And how not to do it? Thanks, Uncle Andy, for that useful life lesson...

Here are some of the celebrities that may inspire Harry and Meghan

Gwyneth Paltrow

For Gwyneth’s “wellness and lifestyle” company Goop, read a potential revival of yoga-loving Meghan’s website The Tig. Now with a Netflix show and even a cruise - Goop at Sea, Goop is estimated to be worth as much as £200million. But where will Meg’s merchandise line be drawn - as Gwynnie’s company’s latest wheeze is the ‘This Smells Like My Vagina Candle’.

Gwyneth Paltrow has built an business empire around her brand Goop

The Beckhams

The family who are a brand. With a superstar football career behind him, the former England captain now travels the world as a global advertising icon. But Victoria’s fashion company is a money-pit, last year losing £12.3million, and should Brooklyn Beckham seemingly aimless career be a warning of what could happen to Archie?

The Beckhams may inspire Harry and Meghan to make money in the world of fashion

Beyonce and JayZ

Their daughter Blue Ivy was born on January 7 2012. Less than three weeks later power couple parents had trademarked her name. Together they’re worth a cool $1billion - but mainly down to their Roc Nation entertainment agency, not their musical talents. Harry can’t sing for his supper, but does he have a business sense?

Jay Z's business success may inspire the Sussexes

The Clooneys

George and Amal Clooney have rarely put a step wrong, supporting the worthiest of causes. He’s not just a chiselled firm star, also renowned for his humanitarian work especially in relation to the war-torn Darfur region, while she’s one of the world’s top human rights lawyers. Of course it doesn’t hurt that the tequila company he co-founded sold for $700million.

The Clooneys have found a perfect balance between making money and carrying out humanitarian work

The Kardashians

That they have been nicknamed The Kartrashians is a clue this money chasing reality TV clan are not the klassiest. But if Harry and Meghan want to earn a billion like cosmetics entrepreneur and supermodel Kylie Jenner , trash reality TV and ‘Meghan make-up’ is the way to go.