“I'm Lovin' It” became the title of McDonald's global advertising campaign launched in 2003.
The campaign was introduced internationally as a unified brand platform, helping McDonald's use one central phrase across markets while allowing individual countries to adapt advertisements and executions. Its informal wording and apostrophe-heavy spelling were designed to sound conversational and contemporary.
The campaign is also associated with a musical jingle and with recordings connected to Justin Timberlake. McDonald's adopted the phrase during a period when it was refreshing its public image and trying to connect the brand with enjoyment, everyday moments, and popular culture.
People often confuse “I'm Lovin' It” with earlier McDonald's slogans, especially “You Deserve a Break Today,” which dates from the 1970s. The two campaigns belong to different eras and used very different advertising styles.