McDonald's launched “I'm lovin' it” globally in 2003 as its new brand tagline.
The campaign was created to give McDonald's a single, internationally recognizable identity. Its wording used casual, contemporary language rather than describing a specific menu item or restaurant feature. The lowercase styling and distinctive melody became important parts of the campaign's visual and audio branding.
The phrase was adapted for markets around the world, while local advertisements and languages varied. This made it different from many earlier McDonald's slogans, which were often associated mainly with English-language campaigns in the United States.
The tagline is sometimes confused with “You Deserve a Break Today,” an older McDonald's slogan from the 1970s. They belong to different advertising eras: the earlier phrase emphasized taking a break, while “I'm lovin' it” focused on a personal expression of enjoyment.