Olivia Wilde unveiled the 2011 Swarovski Star for the Rockefeller Center Christmas Tree in Rockefeller Plaza on Wednesday in NYC.
And to say she was nervous about it… well she did tweet about it the night before!
She wrote: "i'm doing something very important in the morning. it involves a large plant and a very sparkly thing. serious. not for the faint of heart."
Looks like she did a great job!