We love the new 'do!

Hilary Duff sported some brand new blue tresses on a shopping spree at Saint Laurent yesterday in Beverly Hills, and we wonder if the singer was inspired by Kylie Jenner? They say people undergo drastic hair changes when going through a breakup, and this is definitely one of those cases!

The Lizzie Maguire star filed for divorce from husband Mike Comrie last month after he made a complete fool of himself by hitting on women at Mastro's during a boozy night out. Things must be somewhat amicable, though, bc the former couple just threw their son Luca a birthday party together this past Saturday. Their little one turned 3-years-old, and Hil posted the most adorable photo montage in honor of the big day.

The Duffster is hip and happy!