In a statement posted on the charity's website, the family encouraged others to host their own World Baby Showers, where guests can access an "inspired gift registry" that allows them to donate food, vaccines and other supplies to needy children.
"In 2013, we welcomed Milan, our first child into the world. Thanks to your generosity, our first World Baby Shower for UNICEF was an incredible success!" the family said in a statement.
"Now that we're expecting our second child, we want to invite other expectant parents to host their own world baby shower. You don't have to be a celebrity to make a difference—the birth of your child can be a blessing that also saves thousands of children's lives around the world!!"