Nicole Richie Debuts Brunette Hairdo

Showing off a freshly dyed brunette coif, Nicole Richie, 28, was spotted out at Bloomingdales in Costa Mesa, California.

Looking adorable just a few months removed from giving birth to her second child, Richie was out to promote her House of Harlow 1960 holiday jewelry collection.

Richie tweeted: “On my way to Bloomingdales @ South Coast Plaza. So excited to meet all of you!! Bring your cameras!! 12-2pm.”

After posing for pictures and signing autographs for fans, she excitedly tweeted: “Whew! That was fun. Thanks to everyone who came out today in this terrible weather to hang out with me! I wouldn’t have.”

Not forgetting to mention her sexy new hairdo, Nicole added, “OH! & P.S. I went brunette. I feel smarter already.”