Simon Cowell's Hollywood Walk of Fame ceremony brought out some of music's biggest stars on Wednesday. The producer was surrounded by family, friends, and colleagues as he was honoured with a star in LA. In addition to posing with his wife Lauren Silverman, their 4-year-old son Eric, and Lauren's son Adam from her past marriage, the America's Got Talent judge had a reunion with some of his past American Idol and X-Factor contestants, including Adam Lambert, Louis Tomlinson, and Leona Lewis. Kelly Clarkson, who won the very first season of American Idol, even gave a speech during the ceremony gushing about how Simon changed her life.
"I said yes right away because I was so excited to be here for this, because literally we were right here 16-years ago when this man helped change my life," the Grammy-winning singer said. Kelly also spoke to Simon's ability to find "authentic people that have a raw talent and are really themselves and that's all they really know how to be and I think that is something that should be applauded and praised, in this industry especially." How sweet! See which other musicians popped up for the star-studded ceremony ahead.