Biggest Celebrity Breakups of 2011

Sometimes even the most seemingly rock solid celebrity couples just can't make it work and, unfortunately, there were many star-studded breakups that shocked us this year. From Jennifer Lopez and Marc Anthony or Demi and Ashton's sad splits to Kim Kardashian and Kris Humphries calling it quits after just 72 days, we're taking a look back at the breakups that surprised and saddened us this year. Which one was most surprising to you? Click through to see them all now.

Also, don't miss all our Best of 2011 coverage across the PopSugar Network!