Sylvester Stallone turned 72 years old this week, and got proper action hero birthday wishes from some of the best in the biz.
Sly made an appearance Friday at London's O2 arena -- the same day after he hit the big 7-2. While answering questions from the crowd, a video message was played to honor his born day ... with well-wishes from none other than A LOT of his old action flick buddies.
Guys like Arnold Schwarzenegger, Carl Weathers, Jean-Claude Van Damme, Michael B.