When it comes to Academy Award fashion this is the ultimate faux pas!
"Insane" Oscar for Natalie Portman
Natalie Portman makes emotional Oscar speech.
The "Black Swan " actress was moved by her win at the Oscars.
Accepting the Academy Award for Best Leading Actress, Portman said "Thank you so much to the Academy, this is insane".
She also paid tribute to the others nominees in her category, "Black Swan " director Darren Aronofsky and her parents "for showing me every day how to be a good human being by example".
She also thanked her fiancé, "Black Swan " coreographer Benjamin Millepied , whose child she's pregnant with, saying, "(he) has given me the most important role of my life".
One twitter user asked: 'Does Nicole Kidman even know how to clap?'
The movie musical was mistakenly announced to be the winner of Best Picture at the 89th Academy Awards.
Here is the full list of Oscar winners from the 89th Academy Awards in LA.