Shonda Rhimes, the creator of Grey's, initially tweeted exclamation marks next to Oh's Twitter handle, but eventually went on to elaborate on her feelings, writing that Oh was "overdue" for her award and called her the "best actress."
I am so incredibly happy for @IamSandraOh tonight. Well-deserved. Overdue. She is always best actress, y'all. Always.
Following her win, Oh told the press room that her victory was "so surprising" but made for "one of the most incredible nights" of her life.
"I was so stressed about hosting that I couldn't give it one second's thought," she said of not considering her win a possibility. "So it was just unbelievable and amazing. I'm so grateful that it happened... This is one of the most incredible nights of my life."
Of the many things that made up Oh's remarkable night, one stood out to the actress above all else -- her parents. Joon-Soo Oh and Young-Nam Oh quickly went viral after their precious reactions to their daughter's win.
"My parents -- who are amazing, amazing people and internet sensations -- they're so happy. They're so happy and it's just kind of a thing where, for Asian kids to make our parents happy, it's so fulfilling," she gushed. "I'm just so grateful that they were here and able to come.