Last year alone saw the breakups of Britney Spears and Kevin Federline, Paul McCartney and Heather Mills, and Reese Witherspoon and Ryan Phillippe.

FORBES

Paul McCartney and wife Heather Mills McCartney confirmed yesterday they were separating after four years of marriage, sparking what could be among the most expensive divorces in history.

FORBES: She Loves You. Yeah, Yeah, Right.

On his 64th birthday this Sunday, Sir Paul will be in the middle of a messy divorce to model Heather Mills, and with the prospect of a very expensive settlement hanging over his head.

FORBES: At Last, Sir Paul McCartney Is Turning '64'