The actress has been riling her co-stars and colleagues on the sets because "she's such a diva", reported Digital Spy.
"Olivia acts like she runs the show. 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," a source said.