Alyssa Milano has put her money where her heart is -- and is asking corporations to do the same.
Milano, a UNICEF Goodwill Ambassador, donated $50,000 to the charity's Haiti earthquake relief efforts, and has made a "Tweet Challenge" on Twitter asking corporations to match her donation.
The actress writes on Huffington Post, "I challenge any corporation to match my $50,000 donation to the U.S. Fund for UNICEF. 100% of every dollar will go directly to supplies that include tarpaulins, water-purification tablets, oral rehydration salts, family water kits, medical supplies, medical kits, food, shelter, and protection."
Madonna has also donated money to relief efforts and asked her fans "to join me collectively to match my contribution or give in any way you can." She adds in her statement to AP, "We must act now."
The queen of pop gave $250,000 to Partners in Health, a health care provider in Haiti.
See how other stars give back below: