Last year's Crazy Rich Asians was a landmark moment for representation in Hollywood.

In a sincere and kind opener, Golden Globes co-host Sandra Oh praised the groundbreaking movie, calling it "the first studio film with an Asian-American lead since Ghost in the Shell and Aloha."

SEE ALSO: Andy Samberg and Sandra Oh praise new Hollywood in brutally nice Golden Globes monologue

Quick to respond to the burn was Emma Stone, who was cast as the quarter-Hawaiian and quarter-Chinese Allison Ng in 2015's much-criticized Aloha.

"I'm sorry!" Stone could heard shouting from the audience after Oh's dig on Sunday.

Sandra Oh: ["Crazy Rich Asians"] is the first studio film with an Asian American lead since "Ghost in the Shell" and "Aloha."



Emma Stone [in the crowd]: I'M SORRY! pic.twitter.com/YI1S7sLvPH — David Mack (@davidmackau) January 7, 2019

The casting of Stone as Ng in Aloha was met with condemnation from people who said the role should've gone to an actress with Asian heritage. It's also magnified by the fact that on-screen racial diversity is, and has been, extremely poor in Hollywood.

The film's director Cameron Crowe apologized after the furore, emphasizing that Ng was written to be a character who was based on a "real-life, red-headed local" who was proud of her Hawaiian heritage, but "looked nothing like one."

"I have heard your words and your disappointment, and I offer you a heart-felt apology to all who felt this was an odd or misguided casting choice," Crowe wrote on his blog at the time.

Emma Stone yelling "I'm sorry!!!" at that Aloha joke is the energy of all white people I would like in 2019 #GoldenGlobes #GoldenGlobes2019 — Joe Lamour 🥂 (@lamour) January 7, 2019

EMMA STONE YELLING "I'M SORRY" AFTER THE ALOHA REFERENCE I'M SCREECHING MORE #GoldenGlobes — Katie Minard (@KatieMinard) January 7, 2019

Emma Stone yelling “I’m sorry” for Aloha tho 👏👏👏👏 #GoldenGlobes — Emma Gray (@emmaladyrose) January 7, 2019

Stone also spoke of the controversy, and how it made her aware of how little diversity has been on our screens.

"I’ve learned on a macro level about the insane history of whitewashing in Hollywood and how prevalent the problem truly is," Stone told News.com.au, while promoting Irrational Man. "It’s ignited a conversation that’s very important."

Very important, indeed. Et tu, Scarlett Johansson?