LOS ANGELES -- Kim Kardashian West and her famous siblings are donating US$500,000 to help Harvey victims.

A spokeswoman for the reality star says she and her mother and sisters have given $250,000 to the Red Cross and $250,000 to the Salvation Army.

Kardashian West announced the donation on Twitter on Tuesday, saying, "Houston we are praying for you." She used the hashtag .HoustonStrong.

They are among several stars who've said publicly they are helping hurricane victims. Kevin Hart on Monday announced a $25,000 donation to the Red Cross for storm victims and called on other celebrities to do the same.