THE PERFECT INSPIRATION

Lin-Manuel Miranda used his son Sebastian as inspiration for his Mary Poppins Returns character.

The Hamilton creator plays lamplighter Jack alongside Emily Blunt as the new Mary Poppins in the sequel to the 1964 original.

To research Jack, a chipper, upbeat character who “finds the light in any situation,” Miranda had to look no farther than his four-year-old son, Sebastian, who was two at the time. “(Jack’s) just very in touch with his inner child and inner wonder, and I had a two-year-old son. That was all the research I needed.

“Any time I needed inspiration I would watch him playing and there I was,” Miranda told reporters at the film’s London première.

Mary Poppins Returns hits cinemas on Dec. 19.