Darling Nikki

5/21/2009 1:30 PM PDT BY TMZ STAFF
The 30-year-old rehabbed singer resurfaced at last night's "American Idol" finale, looking majestic.

Nikki McKibbin

Since "Idol," Nikki has appeared on "Fear Factor," "Battle of the Network Reality Stars," "Kill Reality," "Celebrity Rehab with Dr. Drew" and "Sober House."

McKibbin received treatment for her cocaine and alcohol addiction.