National Girlfriend Day is a holiday that is observed on August 1st every year. It is a day on which people can take the time to show their girlfriends just how important they are to them. This holiday celebrates the special bond of friendship between girls, whether sisters or mothers, classmates or co-workers. It was created in 2004 by Mistress Susan, who runs a luxury website, as a chance for gal pals to express gratitude to each other.

National Girlfriend Day can be celebrated as a romantic day between people and their girlfriends, or it can be used as a day that people can celebrate the friendship they enjoy with their female friends. People can take their girlfriends out on the town, buy them something nice such as flowers or jewelry, or merely take the time to hang out with them. Women can observe this holiday by commemorating their female friends. They can also enjoy the camaraderie of their female friends by going out shopping with them, having a champagne brunch, or merely just hanging out.

It is important to note that National Girlfriend Day is not an official holiday, meaning that businesses and government agencies remain open on this day.