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OTRC: Lauren Conrad shows off 'My Little pink' ponytail - See photo

Lauren Conrad in an undated photo from her official Facebook page. / Lauren Conrad shows off her pink ponytail in an instagr.am photo taken on April 24, 2012. (Facebook.com/LaurenConrad / instagr.am/p/J0mSSdN50T/)

Lauren Conrad debuted a newly-dyed pink ponytail on the final stop on her book tour on Wednesday.

The 26-year-old former star of "The Hills" Tweeted a photo of her "Little (pink) Pony!" on April 24.

Conrad gave fair warning for the change, Tweeting on Tuesday, "Trying to convince [my hair stylist Kristin Ess] to dye my tips fuchsia for tonight's book signing."

Conrad donned the new look on the last stop on her book tour for "The Fame Game," at the Barnes & Noble at the Grove in Los Angeles. Conrad is a New York Times best-selling author and has published four other books including, "L.A. Candy," "Sweet Little Lies," "Sugar and Spice" and "Lauren Conrad: Style." She has also launched websites like LaurenConrad.com and TheBeautyDepartment.com.

Previously, the reality star showed off pale pink and peach-colored dyed ends, which she did after readers of her beauty blog, Beauty Department, voted for the color.

In January 2011, she ditched her blonde locks to go brunette for a few months. Conrad has experimented with a variety of color for her hair, showing off shades of blue, green and purple dip dyed ends in July.

That change came after she and "My Boys" actor Kyle Howard ended their relationship in July 2011 after dating for three years.

Conrad began her TV career at age 17 with the MTV show "Laguna Beach," named after her hometown in Southern California. She went on to star in its spinoff, "The Hills," which depicted her life in Los Angeles and also starred real-life "villain" couple Heidi Montag and Spencer Pratt. The show ended in July 2010.

The fashion designer debuted her line, LC by Lauren Conrad in 2009. She also developed the LC Lauren Conrad for Kohl's and the Paper Crown fashion labels.

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