Some major Hollywood breakups have already rocked the celebrity world this year and we've got the scoop on which famous gals are back on the market. (Photo By Getty Images)
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Actress Ashley Greene arrives at the Pure Nightclub at Caesars Palace to celebrate her birthday early February 20, 2011 in Las Vegas, Nevada. Greene will turn 24 on February 21. (February 19, 2011 - Photo by Ethan Miller/Getty Images North America)
Actress Jessica Biel arrives at the Vanity Fair Oscar party hosted by Graydon Carter held at Sunset Tower on February 27, 2011 in West Hollywood, California. (February 26, 2011 - Photo by Craig Barritt/Getty Images North America)
Actress Renee Zellweger arrives at the 2010 CNN Heroes: An All-Star Tribute held at The Shrine Auditorium on November 20, 2010 in Los Angeles, California. (November 19, 2010 - Photo by Frazer Harrison/Getty Images North America)