A pin-up model is typically a female who poses for a photo to be shared with many. These are commonly female sex symbols that are glamour models, fashion models or even actresses. It’s not uncommon for some of the most popular calendar companies to have a pin-up model calendar. Many men enjoy getting a pin-up tattoo because it portrays love for the female anatomy. The pin-up tattoo symbolizes sexiness and the attraction a male has for the female. This type of tattoo never goes out of style, and some images have been found to have appeared as far back as the 18th century. Many men enjoy getting this tattoo because of the beauty and sexy look it displays. Pin-up tattoos gained popularity during World War II, but are still very popular today.