Justin Bieber’s week-long assault on Cannes finally came to an end this weekend when he headed to Monaco to annoy some other people. Oh and he also given us a preview of a new song.

Justin Bieber anfar galaJustin suits up for the AmfaR Gala

All week the singer’s been enjoying the high life; attending A-list parties and appearing in various states of undress. He started last Saturday at the Vanity Fair and Armani Party where he posed with 'Entourage' star Adrian Grenier in an unfortunate mustard coloured leather jacket. He then hit up the The Weinstein Company’s party, this time in a black suit. But if you thought Justin had gained a little sartorial elegance while hanging with the A-lister’s you’d be mistaken, as the next day he was photographed partying shirtless in a club with Rick Ross.

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The morning after the singer still hadn't found his shirt as he strolled through the streets of Cannes in some orange shorts. He then allegedly got cozy with his rumoured model ex Barbara Palvi (sorry Selena), before ending his Cannes trip Thursday night at amfAR’s Cinema Against AIDS Gala. Bieber suited up for the occasion and looks to have had a great night after getting a little too close to Heidi Klum for a picture, allegedly ordering from the kids menu and then making a $545K donation to the charity

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Once Bieber was done with Cannes he headed off to Monaco to take in the Grand Prix, beginning his trip by attending the Amber Lounge Gala on Friday night. The next day Justin indulged in some much needed r&r on Rick Ross’s yacht where he was once again, shirtless.

Justin Bieber amber lounge galaWatch out Monaco, Bieber's arrived

But it hasn’t been all fun and games for young Justin. He previewed an emotional new song via Instagram on Saturday night which contained the lyrics “You know exactly what to do to hurt me, its working.” Oh and before we forget, he also appears to be growing a moustache again.