Now and then: '60s and '70s rockers

POSTED: 11:21 PM PDT Sep 22, 2011    UPDATED: 11:00 PM PDT Jun 17, 2014 
Paul McCartney, September 2013

With Paul McCartney celebrating his 72nd birthday Wednesday, see how he and other rockers from the 1960s and 1970s have aged over the years.