Miranda Cosgrove's Must Haves, From Luxury to Drugstore

Working with Shields — whose eyebrows are arguably among the most iconic of all time — made Cosgrove want to step up her own brow routine. "I always fill in my brows, and a good brow pencil is a must-have," she says. The Benefit Cosmetics Precisely Eyebrow Pencil ($26) is her current go-to and the one makeup product she's always has, both on her face and in her bag, at all times.