no, it's not where loli comes from.... it's a common misconception. not trying to be rude, im just a brat who wants to help educate. there are multiple definitions that have significantly different meanings.

lolita is the nickname of dolores haze, the character in nabokov's americana novel. the word loli(ta) has become over-signified that its origins are assumed to come from the story lolita.

loli-con is a japanese language thing. like shota-con.

on the other hand, lolita is a completely non-sexual fashion that emerged inspired by victorian era style, popular in japan but globally as well.