The 'Pricetag' singer Instagrammed a behind-the-scenes photo on Monday (24 November), as she dried her toenails with a hairdryer during her quick change from her red carpet suit into her on-stage outfit.
Jessie made her first red carpet appearance with boyfriend Luke James at Sunday night's awards, which were held at the Nokia Theatre in Los Angeles.
Wearing a sleek white Prada trouser suit with YSL heels and a Gucci clutch, she looked absolutely stunning with her gorgeous fella on her arm.
And while you could barely see her toes under her long, wide-leg trousers, her white nail polish was clearly not the right look for performing later on that evening.
Now, that's what we call style precision!
Jessie went from chic and sleek to gold and glitzy for her performance with Ariana Grande and Nicki Minaj during the show.
The fabulous trio sang their huge hit 'Bang Bang' to a star-studded audience including Lorde, Taylor Swift and Jennifer Lopez.
And because the ladies were all dressed in sexy, head-to-toe gold outfits along with shimmering metallic eye make-up, Jessie's white nails were clearly not going to cut the mustard.
Having a pedicure, however, is not a speedy job, so repainting them gold for a quick outfit change backstage must be near on impossible, no?
Actually no, clever little Jessie just grabbed her hairdryer and blasted them dry with that. Genius!
Do you have any quick-fix beauty tricks up your sleeve? We'd love to hear what they are below. Remember, our fave comment across the site each week wins £50!
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