Kim Kardashian has officially become a billionaire, according to Forbes.

The reality TV star, 40, saw her net worth soar from $780m (£564m) in October to $1bn (£723m) this month, the magazine reports.

Her fortune comes mainly from her two businesses: the shapewear brand Skims, and the cosmetics company KKW Beauty.

She has also earned millions from her TV career – namely Keeping Up With The Kardashians – and endorsement deals.

The rest of her estate is made up of her personal finances, properties and investments.

Kardashian, who is still using the surname Kardashian West, is joining the billionaire club two months after filing for divorce from her husband Kanye.

She filed the divorce papers in Los Angeles in February, citing irreconcilable differences.

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The star previously made a public plea for “compassion and empathy” towards West, 43, amid his struggles with bipolar disorder.

The couple are seeking joint custody of their four children North, Chicago, Psalm and Saint.

Rapper West is said to have become a billionaire last year following the success of his Yeezy shoe brand.

His net worth is now $6.6bn (£4.7bn), according to Bloomberg, making him the richest black man in US history.

Kardashian started her own beauty line in 2017 following the success of her sister Kylie Jenner‘s company – Kylie Cosmetics.

Claiming to be “inspired” by her younger sibling, she sold 20% of KKW Beauty to cosmetics giant Coty last year, which valued the brand at $1bn.

Her 72% stake is said to be worth $500m (£361m), while Skims is valued at $225m (£162m).

The successes of the sisters’ companies rely heavily on their huge social media followings.

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Kardashian has 213 million followers on Instagram, while Jenner boasts 224 million.

Shares in Snapchat fell by $1.3bn (£904m) after Jenner decided to delete her account in 2018.

The younger sister was reported to have become a billionaire by Forbes last year but was later accused of inflating her business value and was stripped of her title.

Kardashian joins the likes of Amazon owner Jeff Bezos and Tesla entrepreneur Elon Musk in the US billionaire’s club.