Maybelline's famous slogan is: "Maybe she's born with it, maybe it's Maybelline."
This tagline, which debuted in 1991, is one of the most recognizable marketing phrases of all time. It effectively communicates the idea that Maybelline cosmetics can enhance natural beauty, making it appear as though the user was naturally born with flawless features. The slogan's enduring popularity highlights its effectiveness in branding and marketing within the beauty industry.