Actually, the use of "pop-tart" as an adjective for a
slatternly pop singer was first coined by Mark Hänser in the Long Beach (California) Union Daily in 1983, first in reference to "Pat Bena-tart" then famously about
Scandal's Patty
Smyth (of "Goodbye To You" and "The Warrior" fame.)
By Mark Hänser, from the
CSULB Union
Daily's "finals week" issue of June, 1983:
"Pop Tart (pop tärt) n. 1. A delightful
toaster pastry manufactured by Kellogg's of Battle Creek, MI. Often iced, the flaky treat is filled with either yummy fruits or some other sweet, such as chocolate or brown sugar-cinnamon. adj. 2. Patty Smyth, lead singer of the pop-rocking quintet Scandal. Possessing a certain fondness for leather-topped party dresses and long black gloves. Smyth follows in the footsteps of a long line of female perfomers who like to tease as much as torch. syn - Pat Benatar, Suzi Quatro."