Jennifer Lawrence is a compelling and convincing actress. Making us sincerely believe that she's somebody else is kind of what she does. That's why we think she might occasionally let her hair down a little and hit the town as Haley Bennett. That's what Bennett makes us think of; a slightly relaxed Lawrence heading out to party. With a slightly different hair color. That bone structure is just identical!
Bennett managed to stick around in the showbiz world with a show of bravado. She was on the verge of being forced to move away from Los Angeles because she had no representation and was getting nowhere; she'd had extended conversations with an agent, but no formal offer. Eventually, she just lied to the agent and said she'd had an offer from elsewhere. The agent bought the lie and signed her on the spot.