Gwen Stefani's L'Oréal Paris Hair Color Commercial

Talk about blonde ambition ...

Gwen Stefani is putting her signature platinum hair to good use in a new TV commercial for the L'Oréal Paris Superior Preference Hair Color line.

The ad sees the singer/L.A.M.B. designer, who joins Jennifer Lopez as a spokeswoman for the beauty brand, whipping her hair around as she touts the product's "rock-steady shine."

Stefani wears a gold top as well as a black suit—her song "Luxurious" playing in the background—while modeling hairstyles ranging from a sleek high ponytail to perfectly tousled Marilyn Monroe waves.

The sleek ad is in sharp contrast to her earlier, bolder commercial for the Infallible Le Rouge 10-Hour Lip Color, which saw the singer sporting red, white and black ensembles as she scrawled "Because we're worth it" in red lipstick and nibbled on diamonds and cherries with her scarlet lips.

Your move, Lopez