Radosh.net sexy activist correspondent TG Gibbon (that is, the correspondent who covers sexy activists, though he may also be a sexy activist himself for all I know) notes that the rally-babe photo trend goes back at least as far as 1952.
The Getty Images caption reads, "Pretty, buxom woman wearing fitted top that bears slogan: GLADLY FOR ADLAI, as man admires her during presidential campaign rally for Adlai Stevenson."
It would work just as well without that first comma.