The program helps support parents with children aged under four years old, living in disadvantaged areas in Northern Ireland. "It makes me feel broody", per People magazine.
She told the adult holding the "very sweet little boy" how "William might be slightly worried" about her maternal feelings, before she swiftly moved to greet other members of the public.
Before you picture the Duchess of Cambridge pacing back and forth in a dimly lit room, know that "broody" is British slang for hens ready to lay eggs (why does everything in England circle back to hens?) - i.e. Kate, who is mum to Prince George, Princess Charlotte and Prince Louis, chatted to parents at the St Joseph's SureStart facility, where she praised mothers who had overcome their "struggle" with breastfeeding.
The couple were there to learn more about the work of Cinemagic - a charity that uses film, TV and digital technologies to inspire and educate young people.More news: Lady Gaga takes Oscar for best original song
Kate and William arrived in Belfast on Wednesday afternoon for an unannounced 2-day visit.
A smile was never far from the Duchess of Cambridge's face as she showed off her footballing skills, tried her hand at archery, practised putting up a tent and took on her husband in a heated Canadian canoe race.
The couple met young people who are making a real difference in Northern Ireland at the party. Their first stop was at Windsor Park football stadium, where they learned about the Irish Football Association's programmes to encourage youngsters to get into sport.