National Girlfriends Day is celebrated annually on Aug. 1 to honor the women in your life – your partner or your best friend.

Mistress Susan created this special day in 2004 for female friends to express gratitude to each other, according to daysoftheyear.com.

National Girlfriends Day is not a public holiday in the United States, but it is popular on social media. There is no specific way of celebrating this day – it's all about appreciating your female partner or friend. On this day, tell them how important they are in your life. 

Here are some quotes, collected from BrainyQuotes and Good Reads, to share on this day:

1. "I like being scared every now and then, I like the suspense and the thrills. Nothing like taking a girlfriend to a movie and holding her hand while she jumps." — Scott Foley

2. "Friendship between women is different than friendship between men. We talk about different things. We delve deep. We go under, even if we haven't seen each other for years." — Jane Fonda

3. "I think behind every great man there's got to be a great woman, whether she's your wife, your girlfriend or not." — Prince Royce

4. "Each friend represents a world in us, a world possibly not born until they arrive, and it is only by this meeting that a new world is born." — Anaïs Nin

5. "I don't know what I would have done so many times in my life if I hadn't had my girlfriends. They have literally gotten me up out of bed, taken my clothes off, put me in the shower, dressed me, said, 'Hey, you can do this,' put my high heels on and pushed me out the door!" — Reese Witherspoon

6. "One friend with whom you have a lot in common is better than three with whom you struggle to find things to talk about." — Mindy Kaling

7. "When my girlfriend and I talk about being happy, I'll get choked up, which I think is the greatest gift you can give a girlfriend." — Seth Meyers

8. "There's nothing better than a glass of wine, a girlfriend, and a long talk." — Karen Fairchild

9. "There are only three things to be done with a woman. You can love her, suffer for her or turn her into literature." — Henry Miller

10. "We certainly bond with each other in times of crisis or these times when we go through these big touchstone moments ... and when we bond, in those really important, pivotal, transitional moments in our lives, we're really vulnerable and therefore we give each other an awful lot of information about ourselves." — Elissa Schappell

11. "Women are made to be loved, not understood." — Oscar Wilde

12. "If women didn't exist, all the money in the world would have no meaning." — Aristotle Onassis

13. "There's nothing better than a glass of wine, a girlfriend and a long talk." — Karen Fairchild

14. "Love doesn't make the world go 'round; love is what makes the ride worthwhile." — Shannon L. Alder

gettyimages-56506434 Army Sgt. Kimberly Singletary is hugged by family friend Regina Ayala during a welcome home ceremony at Hunter Army Airfield Dec. 30, 2005, in Savannah, Georgia. Photo: Getty Images