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"Rihanna and Chris Brown have been spotted leaving a recording studio in West Hollywood separately, sparking rumours that the pair are collaborating on music together. Brown&amp;#039;s representative seemingly confirmed the news when they told E! News that the pair are &amp;quot;indeed currently working on another single&amp;quot;.  It will be the fourth time that the &amp;#039;Diamonds&amp;#039; singer and her former boyfriend have worked together on musical projects. Brown recently teamed up with Rihanna for her Unapologetic track &amp;#039;Nobody&amp;#039;s Business&amp;#039;. The pair previously collaborated on Rihanna&amp;#039;s &amp;#039;Birthday Cake&amp;#039; and Brown&amp;#039;s &amp;#039;Turn Up the Music&amp;#039;. Rihanna is set to debut her first ever collection with River Island at London Fashion Week in February. Watch the music video for Rihanna&amp;#039;s &amp;#039;Diamonds&amp;#039; below:      "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/music/news/a452331/rihanna-chris-brown-spark-new-collaboration-rumours/>