thepopinsights on Instagram: "On The Tonight Show, Selena Gomez took over the stage as the teacher for the night, showing Jimmy Fallon how it's done with her calm confidence and effortless charm. Whether she was teaching him a new dance move, explaining a tricky Spanish phrase, or giving skincare tips from her own routine, Jimmy couldn't help but laugh at his own hilarious mistakes. Selena, patient and playful, guided him through each step with that signature smile, while the audience cheered at