Cody Simpson hangs out with his favorite girls — Jessica Jarrell and sister Alli – at Genesco Park in Nashville, Tenn., on Thursday (August 2).

The trio of stars met and signed autographs for fans following an acoustic performance from both Jessica and Cody.

“What @MichaelPhelps accomplished yesterday is incredible. My hero since I was a real youngster. As a swimmer myself I’m in awe of a legend,” Cody tweeted earlier this week after Michael won his 19th Olympic medal at the 2012 Olympics.

TELL JJJ: Have you been watching the Olympics? What is your favorite event?

10+ pics inside…