From Yolanda & David to Courteney & Johnny: Stars' Shocking Breakups

Yolanda and Davis Foster end their marriage, Courteney Cox and Johnny McDaid call off their engagement, plus Kate Beckinsale and Len Wiseman and more celebs who called it quits

KATE & SAM

Working together on 2008's Revolutionary Road, about a crumbling marriage, may have put a strain on Kate Winslet's real-life relationship with her director husband Sam Mendes, but their March 2010 breakup still stunned friends. "It's really sad; they just grew apart," a source told PEOPLE of the couple's seven-year marriage. "It's tough to be married in this business."