Kim Kardashian and her famous family have pledged to donate half a million dollars to charities helping the victims of tropical storm Harvey.

The reality star announced she, her mother Kris Jenner and her sisters would donate $500,000 (£387,000) on Twitter as she encouraged others to do the same.

She wrote: "Houston we are praying for you! My mom, sisters & I will be donating $500,000 to redcross and salvationarmyus today #HoustonStrong."