There is no specific dress code for attending an Il Divo concert. Il Divo's most recent tour performed in venues from theaters to arenas around the world, and individual concert venues may have dress codes. Il Divo takes the stage in formal wear, which can influence audience attire.
An Il Divo concert taking place in a luxurious concert hall or theater generally requires a more formal style of dress than a concert in an arena. It is best to check with the concert venue itself in order to determine whether there is a general dress code for the venue or a more specific one for the event. In most venues, shirts and shoes are required at all times. The Dolby Theater in Los Angeles, where Il Divo performed on its last tour, prohibits chains and spiked jewelry. Other venues may have similar specific policies.
Beyond basic dress code rules for venues, the manner of dress at Il Divo concerts is greatly varied, from business casual to semi-formal. Because there may be photo opportunities for some ticket holders at these events, attendees may wish to dress in more formal clothing in preparation for photographs with the always formally-dressed members of the group.