Kat Dennings at the Los Angeles premiere of “Iron Man 3” at the El Capitan Theatre, Hollywood on April 23, 2013 in Los Angeles, CA

Kat Dennings arrives at the 55th Annual Grammy Awards at the Staples Center on February 10, 2013 in Los Angeles, CA

Kat Dennings at the Summer TCA Party held by CBS/Showtime/CW in Beverly Hills, CA on August 03, 2011

Kat Dennings arrives at “The Trevor Project’s 2011 Trevor Live!” at Hollywood Palladium on December 4, 2011 in Los Angeles, CA

Melanie Martinez showed off her burgundy OCC Lip Tar in an instagram video

Melanie Martinez wore a Lilac lipstick from Lime Crime in an instagram photo

Melanie Martinez wore a silver lipstick from Obsessive Compulsive Cosmetics for a concert

Melanie Martinez wore silver press-on eyebrows, neon blue winged eyeliner, and deep purple lipstick to make herself look like a Pidgin Doll for a photoshoot

Melanie Martinez wore yellow lipstick in an instagram video

Hayley Williams wore a dark burgundy lipstick at the 2013 “I Heart Radio Jingle Ball” held at Madison Square Garden in New York City on December 13, 2013