Katy Perry wore her short blue bob sleek and straight here. Katy Perry looked so cool with this slick and glossy blue bob hairstyle, this bob cut is blow-waved smooth from root to tip showing off the jagged cut length and layers through the front and sides that adds texture and shape to compliment under the jaw-line. The blue hair color looked awesome! If you don’t love this color, you can try brown, blonde, or even red!

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