Newly Single Rachel Bilson Debuts Lighter Hairdo

Credit: Michael Tran/FilmMagic; Fame Pictures

Nothing like a new haircut to get over a breakup.

Rachel Bilson -- who is "taking a break" from fiance Hayden Christensen -- ran errands in the Los Feliz neighborhood of Los Angeles Thursday with much longer locks. Her tips were also lightened blonder.

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Bilson, 28, flashed her ringless finger to on June 16, and a source confirmed to Us the next day that she and Christensen -- who co-starred in 2008 action flick Jumper -- were reevaluating their relationship.

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They are "taking about a month off," the insider told Us at the time.