Kristen Stewart has had enough of everyone asking whether or not she and Robert Pattinson are still together. On Monday afternoon, she lost it when a photographer didn't stop nagging her.

The video, obtained by X17, begins with the paparazzi asking her, "Why are you saying f-k off?"

"Because you're a piece of s--t, and you don't deserve to breathe the same air I do," Stewart yells back as she stands behind an enclosed gate.

Watch the Video Here.

"Who's a piece of s-t?" the man then replies. "You are, you f--k face," Stewart says.

As the Twilight actress is finally revealed from behind the gate, she quickly walks to her car with the help of what looks like her publicist or manager.

After coming into clear view, the man still insists on questioning her. "Why are you saying that? Are you and Robert back together? Are you and Robert Pattinson back together? Are you dating anyone right now Kristen?" he says. "We're going to watch your movie though."

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Since no other footage was revealed prior to this, no one is aware of the conversation leading up to Kristen flipping out. The 23-year-old actress was apparently taking a lunch break from filming Camp X-Ray in Los Angeles in which she plays a U.S. soldier named Cole.

This wasn't the only time Stewart lost her cool in front of the paparazzi. After they caught her cheating on Pattinson with director Rupert Sanders, she was spotted giving both middle fingers to photographers after exiting a salon with friends in May.

"A lot of the time I can't handle it," Stewart said about the paparazzi in Elle UK's July 2010 issue. "What you don't see are the cameras shoved in my face and the bizarre intrusive questions being asked, or the people falling over themselves, screaming and taunting to get a reaction...All you see is an actor or a celebrity lit up but a flash."

Tags: Kristen Stewart paparazzi Camp X-Ray