Don't call it a comeback—the bob has been here for years! The style has been a standard since the 1920s, but stars like Jennifer Lawrence, Nikki Reed, and Katharine McPhee recently gave the classic look new life. Christina Hendricks is the latest celebrity to jump on the trend: She debuted her new 'do at Mad Men event in New York City, and proved that the versatile cut works on just about every face shape. Inspired to make a similar change? Print out a picture of the version you like best so your stylist can tailor it to suit you. The choppy sections should be cut opposite in proportion to your face shape—square or round faces are balanced by longer layers, while longer face shapes can go with shorter pieces.
See more celebrity hair makeovers in our gallery!