Jimmy Kimmel is celebrating his son Billy’s latest milestone. On Instagram, the late night host reveals he and wife Molly McNearney’s 7-year-old underwent his third open heart surgery. Alongside a photo of Billy in a hospital room smiling big, Jimmy updated fans on his latest procedure, writing, ‘We went into this experience with a lot of optimism and nearly as much fear and came out with a new valve inside a happy, healthy kid.’ In 2017, Jimmy revealed that Billy was born with a heart condition.