America's sweetheart Sandra Bullock reportedly went full diva during a shoot. The actress reputedly treated the whole crew, including the camera man so badly that it made the whole team so happy when she went home early.

A recent report of Star magazine claimed that the Our Brand Is Crisis star threw a major tantrum at the Toronto International Film Festival. Bullock was said to have been in a bad mood since she arrived at the event and treated everyone on the set infelicitously that left the staff with a very bad impression about her persona.

One of the eyewitness allegedly revealed to the Star, "She walked in with a scowl on her face." The source then told the publication that Sandra just started on putting a smile on her face by the time the "camera started rolling."

The eyewitness alleged to the media outlet that Bullock was really in a bad temper at that time as she was purportedly "complaining about the wrinkles on her neck" and she was reportedly "berating the camera man" over the lighting, accusing the crew of "making her look bad."

The source further detail about Bullock's supposedly bad behavior, claiming that the actress left the event earlier than the agreed schedule and she allegedly left the shoot without even saying goodbye or inform anybody ahead of time that she needs to go home early.

However, instead of worrying over her sudden disappearance, the observer said that the whole crew were happy after Bullock left the shoot as she was reportedly so difficult to work with.

In contrary to the Star claimed, Gossip Cop reported that the Sandra Bullock's supposedly diva attitude at the festival is not true. The publication said that an insider cleared to them that the alleged incident "never happened."

Sandra's team is yet to comment about the recent claimed.