- She derived her stage name “Wilde” from author Oscar Wilde.
- Has dual citizenship between Ireland and the United States.
- Olivia lives on a strict vegan diet.
- Once won a pancake eating contest while in Australia.
- Ex-husband Tao Ruspoli is a son of an Italian prince (Papal title).
- Her dog, Paco, has been the mascot for Old Navy since 2006.
- Some of her best friends include Patrick Fugit, Kal Penn and Megalyn Echikunwoke.
- Is a natural blonde.
- Started her career in the “business” as a casting director.