The '60s came back in full-force at the Chanel's pre-fall 2016 show yesterday in Italy, where the models walked the runway with a decidedly Brigitte Bardot vibe for a collection dubbed "A French Girl in Rome." Reimagining the teased-at-the-crown hairstyle of the decade with bedhead-y texture and the occasional oversize bow tucked into the side, backstage beauty star Sam McKnight set the tone for a modern take on the era while makeup artist Tom Pecheux brought it home with the most alluring…