Katy Perry called her 2011 Giorgio Armani Prive ensemble ` ` classic , but with a theatrical edge '' Christina also showed some promise in a Trish Johnson gown in 2001 . Missy Elliott opted for a purple silk two - piece covered in diamonds in Paris .
Katy Perry called her 2011 Giorgio Armani Prive ensemble `` classic , but with a theatrical edge '' Christina Aguilera showed some skin in a Trish Summerville gown in 2001 . Missy Elliott opted for a purple Versace two-piece covered in blades in 2000 .