After wrongly announcing that La La Land had one the Oscar for Best Picture, Warren Beatty and Faye Dunaway were shocked that they had announced the wrong category envelope and had to cover up their mistake. However, it wasn't the presenters' faults! A London-based accounting company, PriceWaterhouseCoopers, was handling the winners. Following this snafu, the cast of La La Land had to tell Moonlight that they actually won best picture live on stage! PriceWaterHouseCoopers then apologized and explained what actually happened.
Read their full statement HERE