Justin Bieber is learning the importance of being on time.  The
pop star was late to his London concert earlier this week, and
now reports say that his tardiness was due to his own diva-like
behavior, according to The Sun.  "He was arguing with members of
his management, his family," says a source about his behavior
prior to the start of the show. "It was a really uncomfortable
atmosphere."  "His attitude was, ‘I’m the star and I can do what
I want,'" the source adds.  However, Justin is fighting back on
Twitter, claiming that the rumors are untrue.  On March 6, he
wrote:   He also wrote a slew of other tweets about the
situation, and he ended things by saying that he just wants to
focus on the music.  So was Justin acting like a diva? We may
never know.  If nothing else, we're guessing he'll at least try
to work on his punctuality from now on.  Source: Twitter, The
Sun