I'm here to tell you that in photography you should definitely not always believe what you see. Here's a perfect example of "photoshop" long before there even was such a thing as Photoshop. Before you go believing every photo you see, just remember that Hollywood and popular culture make sure that everyone looks picture perfect. Here's a retouched photo of Joan Crawford for a publicity shot for her movie Laughing Sinners in 1931!
Photo taken from here: http://petapixel.com/2014/10/17/beauty-retouching-early-1900s-portrait-actress-joan-crawford-thats-photoshopped/#more-148525