The Beatles-led movement transformed the conservative business suit into a tailored, fitted number with a clean, straight cut. In general, they were slimmer, thanks to narrowed pants, pointy dress shirt collars and nipped shirts that lent the entire ensemble a sleek silhouette from head to toe. As the decade progressed, the four "Mop Tops" embraced a more casual approach to style and began to wear turtlenecks and show off color in favor of their earlier all-black uniforms.