So today is International Women's Day, a day where we celebrate the achievements of women all over the world. Yay! It's also a time to take a step back and see where we're all at when it comes to gender equality - turns out things might not be as equal as we'd all like just yet.

If you're feeling left out of thingstoday, fear not - global change is something that we're all responsible for, so we need all dudes to get supporting the cause and this year's theme of parity (basically just a fancy word for equality). Why not take inspiration from some of these famous chaps and their awesome work?

John Legend

While fundraising for the Chime for Change charity (which describes itself as “a global campaign to convene, unite and strengthen the voices speaking out for girls and women around the world), the All of Me singer declared, “all men should be feminists. If men care about women’s rights, the world will be a better place. We are better off when women are empowered—it leads to a better society.”

We totally agree. And that’s why, you sir, are a Legend.

Matt McGorry

You might recognize him from his starring roles on Orange Is The New Black and How To Get Away With Murder, but off-screen Matt McGorry is actually something of a feminist crusader.

He hit the headlines last year when he photoshopped Miley Cyrus and Chrissy Teigen’s nipples onto a pic of his own chest to highlight the ridiculousness of Instagram’s nudity double standards. Hilaire.

Harry Styles

Remember when Emma Watson launched HeForShe at her speech at the UN? Of course you do. We all do. Harry Styles was one of many male celebs who were quick to show their support, tweeting a photo of him holding up the campaign hashtag.

He’s also explained why he thinks HeForShe is so vital, saying, “I think it's very important that it empowers people in general.”

“Any time that you can make someone who potentially might not feel as great about themselves as they should, feel better about themselves, I think that's always a positive thing.”

Asiz Ansari

Master Of None star and comedian Asiz is a fervent supporter of female empowerment, and thinks we all need to stop being so scared of the word ‘feminism’, and used Queen Bey and husband Jay-Z to explain why.

“You're a feminist if you go to a Jay Z and Beyonce concert and you're not like, 'Mmm, I feel like Beyonce should get 23 percent less money than Jay Z,'” he said. Preach.

Mark Ruffalo

Mark perfectly tackled a question about sexism in superhero movies head on, when he pointed out that “what people might really be upset about is the fact that we need more superhuman women.”

“The guys can do anything, they can have love affairs, they can be weak or strong and nobody raises an eyebrow. But when we do that with a woman, because there are so few storylines for women, we become hyper-critical of every single move that we make because there’s not much else to compare it to."

Prince Harry

How could we not include British royalty in this list? He may not be in line for the crown but he is definitely at the forefront of feminist activists.

In a June 2013 speech for the Chime For Change concert the Prince said, “When women are empowered, they immeasurably improve the lives of everyone around them — their families, their communities, and their countries. This is not just about women; we men need to recognize the part we play too. Real men treat women with dignity and give them the respect they deserve.”

Joseph Gordon Levitt

When promoting his movie Don Jon, the 500 Days of Summer actor told Ellen that, “I do call myself a feminist. Absolutely! It’s worth paying attention to the roles that are sort of dictated to us and that we don’t have to fit into those roles. We can be anybody we wanna be.”

He also released a video explaining what feminism means to him. Clue – it’s all about treating people equally.

Tom Hardy

His totally badass reboot of Mad Max got a lot of dudes whining. They were worried that there were just too many ladies on screen for what they strongly believed should be a lads only film. Was Tom bothered? Not even slightly.

“The lead of this movie is a female amputee,” he calmly explained. “It’s a total empowerment of women. It’s actually about f**king time”.

Ryan Gosling

Hey, girl. Ryan’s feminism has inspired probably our favourite ever Tumblr (seriously). It’s also a book now, FYI.

The Blue Valentine actor issued a statement after the Motion Picture Association of America gave his movie an NC-17 rating for depicting a man giving a woman oral sex.

He said, “You have to question a cinematic culture which preaches artistic expression, and yet would support a decision that is clearly a product of a patriarchy-dominant society… It’s misogynistic in nature to try and control a woman’s sexual presentation of self.”

Barack Obama

In 2009 the US president signed the Lilly Ledbetter Fair Pay Restoration Act bill into law, which allows women to file equal pay lawsuits against their employers for up to six months after receiving their last paycheck.

During a speech in January 2012, he discussed why he supports the Paycheck Fairness Act; “too often women can’t access the information they need to fight the pay discrimination… Women can’t wait for equal pay. And I won’t stop fighting to address this inequality.” Way to go Mr. President!