By now, the pinup photograph is as much a part of America's culture as apple pie and fireworks.
Named after the photographic ads that burlesque models would "pin up" on the walls of theaters' waiting room, pinups became iconic during World War II when Hollywood kept American the G.I. well-supplied with photographs of stars like Betty Grable, Rita Hayworth, Esther Williams and Jane Russell. These models were–and continue to be–celebrated for their beauty. And, though it's impossible to ignore the sex appeal of the photos, their patriotism-tinged sensuality seems almost innocent.
Ahead of the Fourth of July, TIME commissioned freelance photo editor Sanna Dullaway—who has previously worked with photos of Indy 500 racing, Queen Elizabeth II and much more—to colorize several images that bring together these pin-up models and America's celebrations of Independence Day. With fireworks, sparklers and red, white and blue get-ups, they're surely cause for celebration.
Sanna Dullaway is a photo editor based in Sweden. See more of her work here.