The Must-See Beauty Looks From This Year's Met Gala

Brosnahan's hairstylist Owen Gould used Better Not Younger hair products to create her sleek ponytail style.

"For Rachel's Met look, we wanted the hair to be sexy, sleek, and sophisticated," Gould said in a press release. "Her custom Sergio Hudson dress really lent itself to that overall vibe so we decided on a modern take on the classic ponytail."

Her makeup was by Lisa Aharon using Kiss Lashes and Clarins skin-care products. Her nails were by manicurist Gina Eppolito.