"Pugh has precious little to do as Alice, who is less a character and more a series of strung-together cliches, but her hardest challenge is performing opposite the vacant Harry Styles, whose acting is so stiff and self-conscious it's impossible to take him seriously, much less believe this is a character capable of the things eventually revealed in the film's comically predictable twist." – Little White Lies
"Alongside such prowess, the 28-year-old Styles can't help but look outclassed. But the former One Directioner is far from embarrassing – and in the end, his half-suave, half-gawky, never entirely convincing performance chimes with the film's showpiece twist in some fun if presumably unintended ways." – The Telegraph
"Styles is cute, but a dud. Everything he does on-screen practically evaporates from one scene to the next." – Time
"The weak link, unfortunately, is Styles, who is not without talent, but who fails to give Jack the dimensionality or inner conflict that the character clearly needs, especially in light of where the movie ultimately goes." – Vulture
"What is convincing is how easily Styles sheds his pop-star flamboyance, even as he retains his British accent and takes over one party scene by dancing as if he were in a '40s musical. There's actually something quite old-fashioned about Styles. With his popping eyes, floppy shock of hair, and saturnine suaveness, he recalls the young Frank Sinatra as an actor. It's too early to tell where he's going in movies, but if he wants to he could have a real run in them." – Variety
"Styles has already taken (warranted) grief for an accent that's all over the place, and his Jack is also a bit of a nonfactor for much of the runtime, though he gets more to do after the Big Reveal." – USA Today