OLIVIA Munn has a huge ego - and it’s getting her into trouble. The actress has been riling her costars and colleagues on the set of HBO’s The Newsroom -because she’s such a diva. “Olivia acts like she runs the show,” says an insider. “She bosses everyone around, whines about the scripts and tells the wardrobe staff they can’t do anything right. “By the end of each shoot, people aren’t even speaking to her… if she keeps this up, she won’t be around for long.” Olivia began her career being credited as Lisa Munn. Since 2006, she has been using the name Olivia Munn personally and professionally.

Soon after her move to Los Angeles, Munn was cast in a small role in the straight to video horror film Scarecrow Gone Wild. She appeared in rock band Zebrahead's video for their song "Hello Tomorrow" as the love interest of the lead singer Justin Mauriello.

In late 2005, Munn began her portrayal of Mily Acuna, a teen surfer, over two seasons of the TV drama Beyond the Break on The N network. She enjoys surfing and continues to practice the sport. She originally auditioned for the part of Kai, but the producers wanted a "local girl."She also appeared in the film The Road to Canyon Lake.