On Tuesday, as the donations continued coming in, the Kardashian and Jenner sisters, along with their mom, made a pretty hefty donation of $500,000 to help assist the victims in Houston affected by the storm, according to TMZ.
The American Red Cross, which is participating in relief efforts, praised Bullock's donation as an "incredible gift".
In a previous tweet, the President had thanked the citizens of the county for their incredible efforts during a hard time. Especially during times of disaster, people see what's happening in Texas and our hearts all go out to them.
Hart then challenged a number of celebrities including Beyonce, Chris rock, Justin Timberlake, Steve Harvey, Dwayne "The Rock" Johnson, Jay Z, Jerry Seinfeld and Dave Chappelle.
Wrestler-turned-actor The Rock was among the first to accept Hart's challenge, sharing a video in which he confirmed he'd donated his $25k.
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In his call to action on Monday (28Aug17), comedian Hart said, "Anybody right now who is in a powerful position where we can impact this issue through social media, let's go. But we know thousands of people have lost everything and now face the daunting challenge of putting their lives and communities back together, and we're using our unique resources and reach to help those in need". "My mom, sisters & I will be donating $500,000 to @redcross and @salvationarmyus today #HoustonStrong".
'I'm donating $100,000. So man, this is for everybody out there in Texas, the relief and everything.
Beyonce had earlier pledged her support to the victims, saying she will consult with her foundation BeyGOOD and her pastor. On Tuesday, Kim Kardashian West tweeted, "Houston we are praying for you!"
It's unsure how many people have been affected by the flooding, but some 2.1m people live in the city.