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"Idina Menzel is to make a return to Glee in an upcoming episode. Lea Michele broke the news on Twitter that Menzel was back on the Glee set.   &amp;quot;I spy @idinamenzel at #Glee today! So excited to have my mama back,&amp;quot; Michele wrote. It is not yet known when Menzel&amp;#039;s return to Glee will air. Menzel previously made a string of guest appearances on Glee in 2010 as Vocal Adrenaline coach Shelby Corcoran. The character was eventually revealed to be the biological mother of Rachel Berry (Michele). Shelby returned to Glee in season three in the episode &amp;#039;I am Unicorn&amp;#039;. Glee airs on Thursdays at 9/8c on Fox. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/tv/glee/news/a465691/idina-menzel-to-make-glee-return-as-rachels-biological-mom/>