Pop star Miley Cyrus and Oscar-winning actors Sandra Bullock and Leonardo DiCaprio have pledged funds to help victims of storm Harvey, while Beyonce on Thursday said she was sending a team to her home town of Houston to help with relief efforts.
A tearful Cyrus announced a $500,000 contribution in an emotional appearance on The Ellen DeGeneres Show.
"It just really makes me just really upset... I go home to my seven dogs and if I didn't have that anymore, it would just be really hard. So I am really happy to help in any way I can. And I hope people understand and can put themselves in those people's shoes," Cyrus said.
About 779,000 Texans have been ordered to evacuate their homes and another 980,000 fled voluntarily amid concerns on Thursday that swollen reservoirs and rivers could bring new flooding.
Harvey roared ashore late last week as the most powerful hurricane to hit Texas in a half-century but has now been downgraded to a tropical depression.
Bullock, and DiCaprio's foundation said this week they will each contribute $1 million to organisations helping people recover from the devastating floods.
Beyonce, one of Houston's best-known celebrities, launched BeyGOOD Houston on her website.
A statement said a team from her BeyGOOD philanthropic foundation was headed to the city to help with relief efforts, and the website asked fans to make donations to two local groups working there.
