She has built a fortune of more than £1 billion by using shrewd marketing skills to cash in on her eye-popping curves.

And now Kim Kardashian is set to boost her fortune by millions more with the release of a new bra with built-in faux nipples.

The 43-year-old reality star launched her new Skims Ultimate Nipple Bra with a cheeky advert posted to her Instagram account which has 364 million followers.

In the advert Kim said: ‘Earth’s temperature is getting hotter and hotter, the sea levels are rising and ice sheets are shrinking. I am not a scientist but I do believe that everyone can use their skill set to do their part.

‘That’s why I am introducing a brand new bra with a built-in nipple. So no matter how hot it is, you will always look cold. Some days are hard – but these nipples are harder.’

While fans called the new bra ‘genius’, the star’s Instagram feed was flooded with comments from those who have had breast cancer praising the design.

One wrote: ‘As a breast cancer survivor, thank you so much, I am crying. We need this product so much.’

Scots-born Hollywood hairdresser Maxinne Lyon, who survived stage-three breast cancer, said: ‘This bra is obviously going to appeal to Kim’s traditional fans and younger women who are going to want to emulate her sexy look. But for breast cancer survivors, it’s a game-changer.

‘When you have reconstructive surgery, the nipple is always the trickiest thing to recreate. Most of the time they simply tattoo the nipple on.

This bra will give millions of women the chance to have a natural look again. I don’t think it’s something Kim probably thought about when she was designing the bra – but it’s genius.’

Fashion historian Dr Einav Rabinovitch-Fox said: ‘During the 1960s and 1970s, with the rise of the feminist movement and counterculture, the ‘natural look’ gained popularity, especially the ‘no-bra-look’.’

A Hollywood stylist said: ‘This is going to start a craze on the red carpet. Everyone is going to be going for the ‘perky nipple’ look.’

The new bra will go on sale on Tuesday with the price still to be announced. Ten per cent of the proceeds will go to international environmental charity 1% For the Planet.