Sexy photos of Kira Kosarin. Kira Kosarin is an American actress and singer who currently stars as Phoebe Thunderman in the Nickelodeon series The Thundermans. Petite young girl! Age 18 (October 7, 1997). Kosarin was nominated for a 2015 Kids Choice Award. Her film, Tripwrecked completed principal photography in November 2014 in Vancouver, British Columbia, and was released on June 19, 2015.