Rose Byrne is unrecognizable as Gloria Steinem on set of the upcoming miniseries Mrs. America!

The 40-year-old actress transformed into a younger version of the activist while filming a scene with on-screen love interest Jay Ellis outside of the Guggenheim Museum on Sunday afternoon (October 27) in New York City.

PHOTOS: Check out the latest pics of Rose Byrne

Mrs. America will tell the true story of the movement to ratify the Equal Rights Amendment through the eyes of the feminists involved. Cate Blanchett, James Marsden, Uzo Aduba, Sarah Paulson, John Slattery, and Elizabeth Banks also star in the upcoming FX miniseries.

10+ pictures inside of Rose Byrne and Jay Ellis on set of Mrs. America…