Worn with red lips, nude lips, smoky eyes or retro liner, side partings are always flattering, chic and confidently sexy. The stars' hair style of choice for red carpet events, a side parting can be worn up or down, strong and sleek like Katie Holmes and Kate Bosworth or soft and curly like Eva Mendes and Heidi Klum. Straight and simple is the best look for day and Cameron Diaz has it just right, while Dita Von Teese and Natalie Portman both take inspiration from forties film stars, emulating Veronica Lake's big, barrel curls.