Operagoers have been warned they will be banned from entering Milan’s prestigious La Scala theatre if they turn up wearing shorts, tank tops or flip-flops. Kimonos, however, are acceptable. The venue’s management team reminded people how not to dress for an opera after complaints that some spectators were donning attire more suitable for the beach.

A “rules of conduct” sign has been placed at La Scala’s entrance urging its audience to “choose clothing in keeping with the decorum of the theatre”, adding that “spectators wearing tank tops, shorts and flip-flops are not allowed”. Those who arrive inappropriately dressed will not be given a refund. The message has also been placed on tickets and the opera house’s website.