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**ALL ROUND PICTURES FROM SOLARPIX.COM**.**SYNDICATION RIGHTS FOR UK, AUSTRALIA, DENMARK, PORTUGAL, S. AFRICA, SPAIN & DUBAI (U.A.E) ONLY**.Katy Perry Hosts Waking Up in Vegas Party at Haze Nightclub in Las Vegas on January 23, 2010 - Haze Nightclub at Aria Hotel and Casino - Las Vegas, NV, USA.This pic:  Katy Perry.JOB REF:     PHZ / PRN    DATE:  25.01.10.**MUST CREDIT SOLARPIX.COM OR DOUBLE FEE WILL BE CHARGED**.**MUST NOTIFY SOLARPIX OF ONLINE USAGE**.**CALL US ON: +34 952 811 768 or LOW RATE FROM UK 0844 617 7637**