The band, famously managed by The X Factor's Simon Cowell, will be playing on 28 June as well as 27 June 2007.
If the foursome's first visit here is anything to go by, tickets for the extra date should be snapped up quickly: they sold out both their dates at the same venue in March 2006.
Backed by a full orchestra, they'll be airing hits from their three albums, Il Divo, Ancora and Siempre.
Tickets are €44.50, and available from 21 December.