Adam Lambert, Leona Lewis confirmed for London charity gig
The event will take place at the Royal Albert Hall on June 7, with tickets for the event on sale now.
Dance act Diversity will also be performing at the event.
Rays of Sunshine help to grant wishes to seriously ill children in the UK and has been active since 2004.
Lambert meanwhile has been busy with the US release of his second album, 'Trespassing'. As previously reported, the album could hit No.1 in America this week, whilst it has also been riding high in the US iTunes chart too.
Watch Adam Lambert perform 'Never Close Our Eyes' on American Idol below:
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