Top 25 [NOW!] Artists of 2012

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HOLLYWOOD%2C%20CA%20%26%238211%3B%20JUNE%2026%3A%20%20Singer%20Katy%20Perry%20arrives%20at%20the%20premiere%20of%20%26%238220%3BKaty%20Perry%3A%20Part%20Of%20Me%26%238221%3B%20held%20at%20Grauman%26%238217%3Bs%20Chinese%20Theatre%20on%20June%2026%2C%202012%20in%20Hollywood%2C%20California.%20%20The%20premiere%20also%20included%20a%20special%20live%20performance%20by%20Katy%20for%20the%20first-ever%20Pepsi%2FBillboard%20Summer%20Beats%20series.%20%20%26%238220%3BKaty%20Perry%3A%20Part%20Of%20Me%26%238221%3B%20will%20be%20released%20by%20Paramount%26%238217%3Bs%20Insurge%20Pictures%20on%20July%205%2C%202012.%20%20%28Photo%20by%20Jason%20Merritt%2FGetty%20Images%29

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DUESSELDORF%2C%20GERMANY%20%26%238211%3B%20NOVEMBER%2022%3A%20%20Harry%20Styles%2C%20Zayn%20Malik%2C%20Louis%20Thompson%2C%20Liam%20Payne%20and%20Niall%20Horan%20attend%20the%20%26%238216%3BBAMBI%20Awards%202012%26%238242%3B%20at%20the%20Stadthalle%20Duesseldorf%20on%20November%2022%2C%202012%20in%20Duesseldorf%2C%20Germany.%20%20%28Photo%20by%20Andreas%20Rentz%2FGetty%20Images%29

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SYDNEY%2C%20AUSTRALIA%20%26%238211%3B%20NOVEMBER%2029%3A%20%20Nicki%20Minaj%20poses%20during%20an%20event%20to%20celebrate%20the%20launch%20of%20her%20new%20perfume%20at%20Myer%20Sydney%20City%20on%20November%2029%2C%202012%20in%20Sydney%2C%20Australia.%20%20%28Photo%20by%20Mark%20Metcalfe%2FGetty%20Images%29

SANTA%20MONICA%2C%20CA%20%26%238211%3B%20AUGUST%2019%3A%20%20Flo%20Rida%20performs%20onstage%20during%20the%202012%20Do%20Something%20Awards%20%20at%20Barker%20Hangar%20on%20August%2019%2C%202012%20in%20Santa%20Monica%2C%20California.%20%20%28Photo%20by%20Kevin%20Winter%2FGetty%20Images%20for%20VH1%29

BEVERLY%20HILLS%2C%20CA%20%26%238211%3B%20APRIL%2018%3A%20%20Singer%20Rihanna%20performs%20onstage%20at%20the%2015th%20Annual%20%26%238220%3BAn%20Unforgettable%20Evening%26%238221%3B%20Benefiting%20EIF%26%238217%3Bs%20Women%26%238217%3Bs%20Cancer%20Research%20Fund%20held%20at%20The%20Beverly%20Hilton%20Hotel%20on%20April%2018%2C%202012%20in%20Beverly%20Hills%2C%20California.%20%20%28Photo%20by%20John%20Shearer%2FGetty%20Images%20for%20Entertainment%20Industry%20Foundation%29