But tank tops, flip-flops and shorts? That’s where Teatro alla Scala, the storied Milan opera house commonly known as La Scala, draws the line.

Milan’s La Scala opera house is an important Italian music institution dating back to the 16th century (Getty Images) A historic opera house in Milan has cracked down on patrons and tourists entering ...

Milan’s La Scala opera house is an important Italian music institution dating back to the 16th century (Getty Images) ...

Milan’s La Scala opera house is an important Italian music institution dating back to the 16th century (Getty Images) A historic opera house in Milan has cracked down on patrons and tourists entering ...

While this opulent attire is not expected of patrons nowadays, Milan ’s Teatro alla Scala opera house, commonly known as La Scala, has recently reinforced its smart dress code in the wake of ...