There’s plenty to consider about Barbie, but let’s start with her feet. Perfectly arched, but not quite demi-pointe—the ideal position to fit into any pump. They’re instantly recognizable to anyone who has ever played with the iconic doll. So when the trailer for the upcoming live-action Barbie movie opened with a shot of star Margot Robbie stepping out of Barbie’s marabou stilettos, still on tiptoes, the internet exploded. On TikTok, people attempted to mimic the viral shot with their highest heels. The Wall Street Journal interviewed a podiatrist about the physical impossibility of the moment. “I need to know everything,” tweeted Chrissy Teigen.

Robbie has answers: The shot took eight takes. She had to hold onto a bar to keep her …