Some Twitter users were wondering what “WCW” meant when the hashtag began to trend on the social media site. “WCW” stands for “Woman Crush Wednesday,” which is when users share pictures of ladies that they find attractive or admire.

Both male and female Twitter, Instagram, Facebook and Tumblr users participate in the weekly trend, which is most always seen on a Wednesday -- where one of the Ws comes from. It’s like a mini social media holiday where everyone participates in sharing a picture of their favorite female or “girl crush.” It could be a famous celebrity like Jennifer Lawrence, or even someone’s love interest. It’s a good way to acknowledge an important person in someone’s life, or just give some insight into who someone finds appealing.

Popular celebrities who show up on “Woman Crush Wednesday” are Nickelodeon star Ariana Grande, former Disney star Demi Lovato, Beyoncé, Jennifer Aniston and “Wrecking Ball” singer Miley Cyrus. These, of course, are just some of the faces showing up among hundreds of celebrity pictures that people share.

But the trend isn’t just limited to people. There are some who share the photo of the Starbucks mermaid and others who poke fun at the mini holiday by sharing pictures of the Statue of Liberty or even Justin Bieber.

WCW is just another way to get people excited about logging onto their social media account, and it’s also good for people who aren’t sure what to share. If there’s a trend going on, then they can easily figure out what to post instead of having to conjure up something obtuse.

Check out some #WCW posts that were shared on Twitter this Wednesday below:

Instagram Justin Bieber Twitter