Some of the biggest stars in the world are turning 50 this year, including Jennifer Aniston who welcomed ex-husband Brad Pitt to her birthday party. Plus, more stars turning the big 5-0 this year include Jennifer Lopez, Gwen Stefani, Jay-Z, Jason Priestley and Matthew McConaughey.
Remember when Jennifer Aniston dated Tate Donovan, who played her love interest on "Friends?" He's just one of her many boyfriends she's had over the years. Find out who Jen dated and was even engaged..