Katy Perry Katy Perry attended the Yves Saint Laurent fall 2012 ready-to-wear runway show wearing her bright blue bob styled in a classic bun. After sporting the French twist on a number or occasions, it appears Katy's moved on to another timeless look. Katy's 'do, while sleek and ultra-precise, is rather simple to style. To recreate the look, just draw hair up into a high ponytail and secure it tightly with a hair elastic. Next, pull a large hair donut around the base of the ponytail and...
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