>>149671929she has a different characterization with each update
>Pre-Crisisgenderbent teenage Clark. America's sweetheart type
>Post-CrisisSlutty edgy sorority girl type who drinks and smokes
>N52 Warrior adapting to Earth culture like Omni-Man
>RebirthKind of a more mature version of her original incarnation
Movie seems to be going with her Post-Crisis personality mixed with some flanderization of her Woman of Tomorrow book, where she's not a burn out alcoholic but she is drunk in the first issue for her birthday and probably just ran with the idea of her being a drunk party girl to contrast her with Clark.