Katherine was a guest on The Ellen DeGeneres Show today (December 7) to chat about her new movie New Year's Eve and her fundraising initiative I Hate Balls, a spay/neuter campaign focused on helping reduce the number of animals killed in shelters across the United States every year.

Katherine Heigl & Ellen DeGeneres Katherine Heigl & Ellen DeGeneres In Conversation On The Ellen DeGeneres Show

During her appearance, Katherine shared details of her daughter Naleigh's (Nancy Leigh) third birthday party and spoke about her and husband Josh Kelley's desire to expand their family.

With photos from the party on screen, Katherine explained that the celebration had a "Fancy Nancy" theme based on the childrens books of the same name. "Fancy Nancy Leigh Turns Three!" she exclaimed laughing.