The Girl Can't Help It is a very funny musical comedy from 1956 with a great premise. Jayne Mansfield plays a gangster's girlfriend with absolutely no talent. The humor comes from the fact that her gangster boyfriend tries to hire a talent agent to make her a recording star. Despite not having talent, she does have an interesting skill - or rather, it's an interesting effect on men. She's so beautiful that men lose control in comedic ways. For example, she makes a man's glasses break just by looking at her, and the milkman's milk boils when he sees her. It doesn't really make sense because why would she affect the milk? Shouldn't his blood be boiling instead? I guess that would make it a horror movie.
The premise of the movie sounds a lot like a lot of Instagram star's stories. A talentless person tries to become a star yet only succeeds because of their looks.