New mom Halle Berry is giving back! The Oscar winner is challenging the public to join the Callaway Golf Foundation and the Entertainment Industry Foundation in the fight to find a cure for ovarian cancer -- and ET has a first look at her new ad!

Halle is appearing in a print public service announcement campaign this summer to raise awareness and funding for the cancer that strikes more than 22,000 women in the United States each year.

The PSA is Halle's first major project since giving birth to her daughter in March. To learn how you can get involved, visit www.callawaygolffoundation.org.