Evangeline has since been showered with compliments from friends and fans alike.
"Hero," actress Michelle Monaghan commented, adding, "I love your scruffy, sweet head!!!!"
"You're so beautiful," wrote a fan.
The photo has been liked by over three hundred thousand people, including her Ant-man and The Wasp, co-star Michelle Pfeiffer.
Some users were shocked, with one user writing:
"What the f**k have you done?"
Others compared her to Sinead O'Connor and Demi Moore (in G.I. Jane), according to E! News.
While the reason for the change remains unclear, Evangeline appears to be embracing her new look.