Lily Aldrin is a fictional character from the television series How I Met Your Mother. She is portrayed by actress Alyson Hannigan and is known for her vibrant personality and artistic aspirations. Lily works as an artist and later as a kindergarten teacher, showcasing her passion for creativity and nurturing children. In the series, Lily is married to Marshall Eriksen, played by Jason Segel, and they share a close-knit relationship filled with love and humor. Throughout the show, she navigates various life challenges, including friendships with Ted Mosby, Robin Scherbatsky, and Barney Stinson, contributing to the show's comedic and emotional moments.