Although the initial synopsis sounded intresting on a psychological level, the movie very quickly showed lack of character depth and back-up stories as well as stereotypes : the two main sister characters are just very caricatural in their exhuberant&successful VS introvert&envious dynamic. There are huge narrative ellipses that make it quite hard to give credit to the development of the storyline. And last but not least, this movie borrows a great deal from "Always Shine", a 2016 movie directed by Sophia Takal and starring Caitlin Fitzgerald. So it definitely feels like a "deja vu".