The Emmy winner is set to tie the knot with longtime beau Ryan Piers Williams, her rep confirmed to E! News.
There's no word yet on a wedding date for the super low-key couple, who met while both were students at the University of Southern California (he cast her in his student film, the rest, as they say…)
But while she's keeping mum on her big news, the 26-year-old bride-to-be couldn't hide her engagement ring, proudly showing off the diamond at the Edinburgh Film Festival last night, where she was premiering The Illusionist. Congrats!