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Justin Bieber is firing back at his haters. 

He took to Twitter on Wednesday morning to address some of the rumors surrounding his past week in London, which included his so-called "worst birthday" and angering fans at the O2 Arena on Monday for allegedly arriving two hours late.  He wrote that he was going to stay positive and not let "rumors, rumors and more rumors" bring him down. 

The Biebs said that while he knows that it's "part of the job to be judged," he wants fans to know not to believe everything they read.  He addressed the shirtless photo of him that went viral earlier this week, saying that he was simply sweaty after having had performed for two hours.  He continued on saying, "I'm a good person.  I know that.  U can't tell me different."  

Among the tabloid speculation are rumors that he was trying to bring his pal Jaden Smith, the 14-year-old son of Will Smith, into a nightclub for his birthday.  Other reports say it was Bieber's diva behavior and late-night partying that caused the concert delay and that he was fined 450-thousand dollars by the Greenwich Council for his concert going over curfew.  The Greenwich Council has issued a statement saying that they have taken no actions against O2 Arena in connection to the Bieber concert. 

Check out the rant: