It's not only very fashionable, it's often accompanied by a slack jaw -- mouth hanging open as if they can't breathe otherwise. They look stupid or drugged. I see this a lot in real life, not sure how common it is in reel life.
Sweeney began as a child actress in 2009. You can see in childhood photos that she was born with those lips.
“ It’s not only very fashionable, it’s often accompanied by a slack jaw — mouth hanging open as if they can’t breathe otherwise”
If only she had a nose ring and some fake long eyelashes, said no man ever.