The film takes place in 60s London and focuses on a girl played by Carey Mulligan who is introduced to a world of the upper class when she falls in love with a wealthy man. She is entranced by the art, the music, the outings, the clothing Rosamund Pike's character dresses her up in, etc. I was personally captivated by the natural and effortlessly chic silhouettes and details. They left me wanting to find out more about early 60s fashion.
The early 60s is a sometimes overlooked period that came before the arrival of counter culture and the hippies. Many of the defining style icons of the time presented classy but progressive images, like Jacky Kennedy, Audrey Hepburn, and Jean Shrimpton.
This period in time saw the popularization of the mod look, which took hold of fashion through things like fitted and tailored pieces, flat shoes, and simplification of accessories. Shorter hairstyles became more popular and focus of makeup was on the eyes.
Fashion of the 50s was not let go of immediately. This included A-lines and the sack dress, which evolved into shifts and minidresses in the 60s. From a modern perspective, it's difficult to see any of this as drastic progression, but it was nonetheless a great leap towards modern fashion.