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

POSTED: 11:21 PM PDT Sep 22, 2011    UPDATED: 11:00 PM PST Jan 09, 2014 
Rod Stewart, May 2013

With rockers Rod Stewart, Jimmy Page and David Bowie celebrating birthdays this week, see how they and other rockers from the 1960s and 1970s have aged over the years.