The Best Photos from the Baby2Baby Event in N.Y.C.

For many of Hollywood's biggest stars, Baby2Baby events are a can't-miss, raising funds for the charity's mission of providing essentials such as diapers and formula, both on an ongoing basis and in critical times of crisis across the country.

Celebrities including Meghan Markle, Lauren Sánchez and Katharine McPhee have volunteered with the organization, and stars such as Jessica Alba, Kim Kardashian and Heidi Klum have turned out for the annual gala.

In November, Charlize Theron will be honored with the Giving Tree Award for her work on issues spanning from the prevention of gender-based violence and HIV among young people to LGTBQI rights and youth development.

Ahead of the honor, the organization hosted a volunteer session in New York City in support of its new initiative to combat the maternal health crisis. Celebrities such as Ciara, Camila Alves McConaughey, and Salma Hayek Pinault turned out to help assemble Maternal Health & Newborn Supply Kits filled with items for new mothers in need and their newborns, including diapers, hygiene products, breastfeeding supplies, postpartum care items, and educational resources, according to a release. See the best photos below.