Happily-ever-afters may be few and far between in Hollywood, but this year's bumper crop of celebrity breakups seem to cement that theory.

Most recently, "Two and a Half Men" star Ashton Kutcher filed for divorce from actress wife Demi Moore on Dec 2 in Los Angeles, following more than a year of separation, according to court documents.

Kutcher, 34, cited irreconcilable differences in divorce papers filed in Los Angeles Superior Court, adding that he is not seeking spousal support or denying support to Moore.

As the year comes to a close, here's a look back at the biggest celebrity splits of 2012.

Click on the thumbnails for more.