We ladies wear a lot of hats: worker, daughter, wife, girlfriend, friend … that’s just for starters.

Back in the early years of the women’s rights movement, women wore a very specific hat: the fedora, adopted by activists after it appeared in a play featuring a cross-dressing heroine. A new campaign called Fedoras for Fairness is using that symbol of women’s earlier struggles to raise awareness of the hardships faced by a growing group of women today: immigrants.

We Belong Together wants to raise awareness and support for the estimated 5.5 million undocumented women living in the United States. Undocumented residents face many hardships, including lack of access to public services like healthcare and the risk of being separated from their children.

Fedoras for Fairness, supported by celebrities like Julianne Moore and John Leguizamo, asks Congress to pass immigration reform that would give undocumented people in the US a pathway to citizenship.

The celebrity endorsements in the official video (above) give the issue weight, but We Belong Together is asking everyday citizens to participate too. To support the campaign, take a picture while wearing your favorite fedora, and share it online with the hashtag #fairdora.