If you're unfamiliar, the T3 Whirl is kind of like the "Transformer" of curling ... opt for the T3 Whirl Trio ($250, Sephora). It comes with the universal base and three interchangeable barrels ...

and what looks to be a T3 Whirl Trio curling wand and T3 Lucea flat iron. We weren't surprised to see T3 in the mix on Grande's vanity - it's a brand that celebrity hairstylists frequently reach ...