American Idol Original 'Idol' runner-up Justin Guarini joining 'Idol Tonight' as co-host 01/24/2007 First Brian Dunkleman resurfaced. Now it's Justin Guarini's turn. Read More RELATED NEWS 'American Idol' Season 1 finalist Nikki McKibbin dies at age 42 Kelly Clarkson says her weight reflects her happiness -- "It's when I'm fat that I'm happy"Kelly Clarkson: "I wanted to kill myself" when I was "really skinny" TAGS: American Idol Popstars Idol Tonight Kimberly Caldwell Simon Cowell Brian Dunkleman Justin Guarini
