Björk in the Swan Dress, 2001

Björk on the red carpet at the same 2001 ceremony, nominated for Best Original Song for "I've Seen It All" from Dancer in the Dark. Macedonian designer Marjan Pejoski made the dress, a white swan whose neck wraps around her own, and she played along by pretending to lay an egg on the carpet. It landed on plenty of worst-dressed lists that week, yet it is now one of the most recognized outfits in Oscar history and the go-to example of art over etiquette.