One of her closest friends is Kaia Gerber, a much sought-after teenage model whose mother is supermodel Cindy Crawford.
"She was one of my first friends at school, I love her," says Emilia, who has also witnessed the rising career of actor brother Charley Palmer Rothwell, 26.
Charley, Patsy's son with former boxer Alfie Rothwell, won good reviews for his parts in Christopher Nolan's Dunkirk and Darkest Hour, starring Gary Oldman.
He's also appeared in Legend with Tom Hardy and British dramas Casualty and Our Girl.
Emilia's brother Fenton, a year her senior, is an aspiring screenwriter and model in Tinseltown while Charley prefers to live in the UK.