Heidi Klum marks son Henry's 20th birthday by sharing a series of personal snaps In a moving social media post, Heidi Klum has marked her son Henry's 20th birthday by sharing a series of personal photographs and tributes on Instagram to her boy. 13 September 2025 Heidi Klum has marked her son Henry's 20th birthday by sharing a series of personal photographs and tributes on Instagram to her boy.