But according to the show's lead makeup artist, Rebecca Wachtel, the actor also deserves credit for some of her glowing beauty looks throughout the series.
In an interview with Insider, Wachtel revealed that at one point during filming, Keough asked Wachtel to teach her how to apply her character's makeup over a FaceTime call.
"Because we were shooting during COVID-19, we would joke that if I caught it, what would we do? And then I got it," Wachtel said with a laugh. "I wasn't even that sick, but I was running things from my hotel room. So she wanted to do her own makeup and she FaceTimed with me."
Wachtel said there was a makeup assistant on set to gather beauty products, but Keough still took the reins on the actual application.
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"She was really excited about it. It was really cute," she said. " I would be like, 'No, that's too heavy there! You've got to change that.' And then I'd have her send me photos."
Wachtel said she also called Keough between scenes to ensure the makeup still looked good, and joked that they're both "real control freaks," which made for a "really funny dynamic" between them.
"I just love and adore her," Wachtel said.
According to the makeup artist, there was one product in particular that Keough especially loved: Evanhealy's Luna Glow Balm. Wachtel described it as Keough's "favorite thing" in terms of beauty.
Though it might be a surprise to fans that Keough had a hand in her character's makeup, Wachtel noted that the actor was interested in the process from day one.
"She would always ask me questions and watch as we were going," she said. "Riley was really into the makeup."
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