Julianne Moore, is that you?!

The 55-year-old actress looked almost unrecognizable on the NYC set of her newest movie, Wonderstruck, on Wednesday, June 1 — and we can't get over her drastic transformation!

julianne moore getty images
Getty Images; Splash

Julianne in 2015 (left) and 2016 (right).

Julianne swapped her signature red tresses to instead don a gray wig to portray an older woman named Lillian Mayhew in the upcoming film.

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The flick — which also stars Michelle Williams and Amy Hargreaves — is set to hit theaters in 2017.

Click through the gallery below to see more stars who’ve transformed themselves for roles!