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"Katy Perry is ready to party again -- for a good cause.\r\nThe newly single star will make her first official post-split appearance since calling it quits with Russell Brand Friday in Las Vegas.\r\n\r\nJoining her pal Markus Molinari of J. Molinari Jewelers, Perry, 27, will celebrate the grand opening of 1 OAK Las Vegas at The Mirage Hotel at a bash that will double as a benefit for the GiveLove charity.\r\nGiveLove cofounders Patricia Arquette and Rosanna Getty will also join in the party that will feature a performance by Ferras.\r\n\r\nHer Friday outing will come less than one month after Brand, 36, filed for divorce December 30.\r\nThe &amp;quot;Teenage Dream&amp;quot; singer was originally scheduled to appear at the 2012 People&amp;apos;s Choice Awards on January 11, but backed out due for unknown reasons.\r\n\r\nThough Perry&amp;apos;s pals say she was blindsided and devastated by her husband of 14 months&amp;apos; filing, the singer continues to put on a brave face for her fans.\r\n&amp;quot;I am so grateful for the love and support from people around the world,&amp;quot; Perry tweeted at the time. &amp;quot;You guys have made my heart happy again.&amp;quot;"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.usmagazine.com/celebrity-news/news/katy-perry-set-for-first-big-night-out-in-us-since-split-2012261>