Ballerini's slicked-back updo was giving Y2K vibes, which celebrity hairstylist Kelsey Deenihan created using Mermaid Hair hot tools. "Over the last few days Kelsea, her stylist Molly Dickson, and I sent back and forth some glam ideas and inspiration and collectively landed on sleek hair pulled off the face with a warm sunny monochromatic makeup look," she says. "Having the hair pulled back sleek allows the intricacy of the dress's neckline to be front and centre."