bieberhaircut460.jpg This is NOT his best look!

Justin Bieber debuted a new half-shaved sideswept haircut at a fan meet and greet over the weekend, and a lot of his loyal Beliebers are none too pleased about it!

A lot of the Canadian pop sensation's Twitter followers are even comparing the cut to some of his female pop singer peers! "Justin Bieber's new haircut reminds me of Miley Cyrus and Rihanna lol," one Twitter user posted.

"What the hell has Justin Bieber done to his hair. Officially don't fancy him anymore," wrote another.

Considering last time he changed his trademark coif he lost 80,000 Twitter followers, he better be careful about making sudden hairstyle changes!