“Teenage girls will save the world,” “The future is female” ― whatever the catchphrase of the moment, the message is clear: There’s something unstoppable about the power of a young girl.

To celebrate International Women’s Day, we’ve rounded up 50 photos of girls looking joyful. The photos feature girls from Kenya to China to England, laughing, smiling, jumping and otherwise expressing happiness. And they’re positively infectious ― try to make it through without smiling back.

We may not know all of their circumstances, but in the sheer moment of unadulterated joy captured by a camera’s click, we can feel the power of their spirits.