Debuting in 1982, Cherry Poptart was the creation of artist and writer Larry Welz and originally published by San Francisco underground comic publishing giant, Last Gasp Books, who, I'm pleased to state, are still in operation today.
Last Gasp editor-in-chief, Ron Turner, tells me the character Cherry Poptart actually got her beginnings in Bakersfield Kountry Komics. According to Ron, it was after catching her there, that he got Welz and his colleague, artist Larry Sutherland, who were both originally from Bakersfield, where Bakersfield Kountry Komics was published, to "commemorate that lovely San Joaquin Valley shithole."
The title character, described as "blonde, cute, sexy, fun, friendly, and smart," (in addition to always braless, very openly bisexual, and eternally 18) was ranked #82 in the Comic Buyer's Guide's 100 Sexiest Women in Comics.
Shortly after the second issue hit the stands in January of 1985, the Kellog company (the makers of Pop-Tarts® toaster pastries) got wind of the buxom blonde comic cutie, and threatened legal action against Welz and Turner if they continued to use their trademarked name. Because of that, the title of the book was shortened to just Cherry by the third issue and the character's surname changed from "Poptart" to "Popstar." Above is the cover of issue #1. I've seen prices on this one ranging from a few bucks for one in fair condition to well over a grand for one in mint condition.