I love Jennifer Lawrence! In my experience when strong female characters are portrated in fiction, they tend to be either very sexy, very sassy or kind of angry, as if it is impossible to write female leads the way the male ones are written (fun, active, interesting). Jennifer Lawrence would be my best example of a naturally strong, funny and lovable leading character who just... is. I saw first time in an interview by youtuber Dan Howell and loved the way she interacted, especially how she changed from very sweet and friendly to much more direct when she found out they were the same age (he looked younger). Link if you should want to see it, it is only 7 minutes: https://www.google.com/search?q=dan+howell+with+jennifer+lawrence&oq=Dan+Howell+with+Jenn&gs_lcrp=EgZjaHJvbWUqBwgDECEYoAEyBggAEEUYOTIHCAEQIRigATIHCAIQIRigATIHCAMQIRigATIHCAQQIRigATIHCAUQIRigAdIBDzE2NDgyOTUyNTlqMGoxNagCALACAA&sourceid=chrome&ie=UTF-8#fpstate=ive&vld=cid:c5aaf9cf,vid:Rf1elCTiCTg