I love Brie Larson in almost anything right now. She was great in Scott Pilgrim vs the world movie where I first watched her and everything I have seen her in since then (short term 12 is in my list of movies to watch). And my god, Tilda Swinton knows how to disappear, in a character that is. I failed to recognize her for a good few minutes. She was very good as Amy's boss at the men's magazine where she works. She played the Meryl Streep like character from Devil Wears Prada. Bill Hader has sold me as an actor from his last two movies I watched. This and the Skeleton Twins. He portrayed a kind, caring, likable and yet confident (and not a stereotypical geeky guy usually shown on film) Aaron really well. His chemistry with Amy worked great and Amy herself shone. This is still her first movie and she (for the most part) in the movie played Amy Schumer so I will reserve my judgement.
Definitely not a laugh out loud comedy but a comedy with a story to it so overall, a fun movie to watch.