The 2017 Academy Awards was history-making after 'La La Land' was mistakenly announced as best picture when the prize was meant for 'Moonlight.' The casts switched places on stage as director Barry Jenkins took to the microphone and accepted the top prize.
Also, both Viola Davis and Mahershala Ali took home an Oscar for best supporting actress and actor in a supporting role.
After Viola Davis won her first Oscar, Oprah Winfrey tweeted, "Hallelujerrrrrrr! @violadavis ! " We are the only profession that celebrates what it means to live a life!""
Celebrities took to social media to react to the winners.
See more celebrity reaction to the Academy Awards show below.