Canadian superstar Justin Bieber has hit out at 'fake stories' and stupid 'rumours' in a series of Twitter posts shared earlier this afternoon (March 6).

It has been a bad press week for the 'Boyfriend' hitmaker after he took the stage more than two hours late at his recent concert in London, but he told his 35 million followers today that he isn't taking any notice of the negativity because the only judgement he cares about is God's:

"Rumors rumors and more rumors. nothing more nothing less. might talk about them 1 day. rt now im just gonna be positive. cant bring me down. im focused on the good things in life. im blessed and not forgetting it. im giving back every day for it. cant phase me."

Bieber continued: "fake stories to sell papers i guess are part of the job. but im a good person. i know that. u cant tell me different. we know the truth. as long as my family, friends, and fans r with me u can say whatever. we are all equal in God's eyes & we have a responsibility to each other."

He then referred directly to reports that surfaced earlier this week about his birthday, adding: "so make up stories about fake fines and make no mention of the positive, or say when i came out of my show with my shirt off because after performing for 2 hours i might be sweaty i was going into a club (really?) or any girl i stand next to is my girl or that i dont care, or that i dont feel, or that a 19 year old going to a club in europe is wild."

Despite being clearly affected by the speculation and negativity, Bieber confessed that he understands it is just "part of the job to be judged": "...but judge me on the facts, judge me on the music, and be careful of the judgement u pass. but know this...im only judged by one power, and i serve him." Watch Justin Bieber talk to Jimmy Kimmel here: