The 24-year-old star recently appeared on Late Night with Jimmy Fallon to promote her new flick The Ides of March.
She admitted while on the show that she is a big fan of US pop singer Justin Bieber.
Wood said: 'I've got a bit of the Bieber fever.'
Fallon then asked the star how she got Bieber fever and she told him she went to see his movie Never Say Never as a joke, but ended up loving it.
She said: 'I was kind of upset. I was like, dude, being a Justin Bieber fan was not in the cards. I wasn't planning on this. But I used to be in the closet about it, but now I am proud and not ashamed.'