National Girlfriend Day was most likely created by a woman known as Mistress Susan around 2004. She reportedly established the day as a way for girlfriends to express gratitude and appreciation for their female friends. However, some other sources also attribute the creation of the day to Allie Savarino Kline and Sally Rodgers in 2006, who promoted it through their now-defunct website Sisterwoman.com. There are even mentions of authors Kathleen Laing and Elizabeth Butterfield referencing the day as early as 2002, but the strongest claim seems to belong to Mistress Susan. The day is meant to celebrate female friendships and the bonds of sisterhood rather than romantic relationships.
