By Grace Gavilanes
Updated Feb 11, 2015 @ 7:48 am
natalie dormer birthday
Credit: Tim P. Whitby/Getty Images

It's a big day for Natalie Dormer! The actress is ringing in her 33rd birthday. Best known for her roles in Game of Thrones and, most recently, in The Hunger Games: Mockingjay – Part 1 , the star isn't afraid to shed her red carpet persona for a more stripped down, bad-ass look à la Cressida, her filmmaker counterpart in the final two films of the Hunger Games series.

On her drastic transformation for the role, Dormer tells InStyle, "She's come from the Capitol to join the freedom fighters and bring the districts together to fight Snow, so I think it was an aesthetic comment on the psychology behind her." Nailed it.