There wasn't a dry eye in the house!

While singing her song "Piece by Piece" on American Idol on Thursday night, Kelly Clarkson, who is nine months pregnant, broke down several times as she sang the ballad about her dad abandoning her as a child. The pregnant mother couldn't help but get emotional as she crooned about being the parent her father never was and meeting a man who would never leave their child.

American Idol's first winner had to stop several times during the emotional performance. Jennifer Lopez, Keith Urban, the contestants and the rest of the audience all had tears streaming down their faces during the song.

The songstress stopped by the Idol set to celebrate the show's last season. Despite attempting to distance herself from the hit show -- Kelly has a lot to thank the FOX show for. She won the first season of Idol in 2002, and got the million-dollar prize of an RCA record contract. She had a No. 1 hit on the Billboard charts with her first single, "A Moment Like This." Her second album Breakaway was a huge success, earning two Grammy Awards.