Bloom was said to be embarrassed by Bosworth�s behavior at a green charity�s festival in Japan where she dropped her cigarette butt on the floor without a second thought.
A source told the 3am girls: "Japan's very clean and everybody carries around disposable ash trays to stub out their cigarettes.
"Orlando had a massive go at her. He said they were meant to be there to promote the environment and she was chucking litter around. There was a lot offing and blinding. Kate kept saying 'nobody saw, I don't know what your problem is'."
Bloom was at the festival to make a speech on green living and was supposed to stay on for an extra day, however, after Bosworth�s lack of brain cells ruined his fun, they both flew to Tokyo a day early where Bosworth was scheduled to help promote �Superman Returns�.
Tut tut, she should really know better�
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