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Rocking an oversized sweater and shorts, complete with round framed clear glasses, a hat and the offending pacifier stuck between his lips, the "Sorry" crooner was pictured at the entrance of the club.

These photos come after photos had surfaced showing Bieber wandering around the city of Boston, barefooted and feeding squirrels, while his bodyguard carried his shoes.

Following his increasing eccentricities, many has speculated that the singer might be on the verge of a break down as many other celebrities have experienced before him.

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We just have to decided if Bieber's pacifier stunt was for a costume party or a new sign of his impending meltdown.

Watch video clip below: