"We are back to work after an extra day off. You know, we were supposed to have a show last night, but we didn’t because my daughter had a baby last night. People know I have two little kids but they don't know I have two older kids," Jimmy Kimmel said on his show, referring to adult children Katherine, 33, and Kevin, 31, who he shares with ex Gina Maddy Kimmel. "My oldest daughter, she's 83 years old," he quipped, before explaining she gave birth Monday, prompting him to cancel taping on Monday. "Her name is Melania," he then joked, before clarifying her name is actually Patti and sharing video of him pranking his Aunt Chippy over the child's moniker.