Gwen Stefani's L'Oréal Paris Infallible Le Rouge Ad

Gwen Stefani

Photo courtesy of L’Oréal Paris

Seeing red: Gwen Stefani in the L’Oréal Infallible Le Rouge ad.

Gwen Stefani's never without her red lipstick, which makes her the perfect person to pitch L'Oréal's Infallible Le Rouge.

Rocking a suit and tie and flashing a scarlet pout, the star gets her femme fatale on in a new print ad celebrating the 10-hour lipstick, which comes in 30 shades.

"Feel it. Wear it. Love it," the ad quotes Stefani, who signed on as the face of L'Oréal Paris last month.

“Gwen’s unique personal style and vivacious spirit, together with her career accomplishments in both fashion and music, makes her an inspiration for women everywhere, and an exciting addition to the L'Oréal Paris family," Karen T. Fondu, President of L'Oréal Paris USA, said in a press release announcing the signing.

Now that the L.A.M.B. designer has given her signature red lips the spotlight, maybe she can put her platinum hair to good use for the brand's hair color range!