The talk show host forgot a somewhat important milestone this week. Kelly Clarkson rose to fame on American Idol, which she won on September 4th in 2002. In a video posted to her Instagram, Kelly is chatting with her colleague Andy. He was seen stating, “Hey Kel, it’s September 4th. On this day 22 years ago…”  This was enough for Kelly to guess what he was referring to, “Oh my God! It’s September 4! Oh my God, when you said that date I got nervous, like, ‘Did I miss an anniversary?’ I did.”