potodaily:

Phantom of the Opera ( 2004 ) Trivia: 

In Christine’s debut performance as the star of the Opera House, she wears a costume that is an exact replica of the outfit Empress Elizabeth (a.k.a. “Sisi”) of Austria wears in her most famous portrait. This includes the white diaphanous dress with full, billowing skirt, as well as the diamond star-bursts in her hair and earrings.