Celebrities such as Corey Feldman and The Temptations will reportedly attend and perform at a private memorial at a Los Angeles-area church, June 21, for late star Jeff Conaway, RadarOnline.com has exclusively learned.

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Marilyn Manson, a good pal of the late actor, has also been invited to the event, which will be held by Conaway's ex-girlfriend, Vikki Lizzi.

As Jeff Conaway struggles to hold onto life, his former Taxi co-stars Tony Danza and Marliu Henner have maintained a bedside vigil of their beloved friend since he was hospitalized, RadarOnline.com has exclusively learned.

"Marilu has been talking to Jeff, and he seemed to be trying to respond to her over the weekend, even though he has been in a medically-induced coma," a source close to Conaway told RadarOnline.com.

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"Jeff would turn his head towards Marilu when she was talking to him. It was truly a touching moment," added the source.