Submitted by masongraves_ t3_yce7we in movies
Tatum O’Neal in Paper Moon and Andy Griffith in A Face In The Crowd are the first two that come to mind for me
Hailee Steinfeld in True Grit also seems appropriate, although I think she has plenty of ability and time to put out something that will eventually top it
I guess you could argue that Lupita Nyong’o gave her best performance in 12 Years A Slave, although I think her turn in Us might rival it. I have no doubt she’ll keep making superior work in the future
One last one that just came to mind is Eva Marie Saint in On The Waterfront