Presto, change-o – it's an instant makeover. Tell us what you think of the stars' lengthier looks – then see the results in PEOPLE's Fall StyleWatch issue, on newsstands Aug. 4. By Serena Kappes
Barton took a short break from her signature long locks, stopping by a Beverly Hills salon to dye her shoulder-length hair brown. Then voila! The next day, they were back.