“I’m Lovin’ It” launched globally for McDonald’s in 2003 and became the brand’s long-running English tagline.
McDonald’s introduced the campaign in September 2003, using the phrase in advertising, packaging, and other brand communications. The campaign was designed for international use, with localized executions built around a consistent central line and musical identity.
The phrase is written in a deliberately conversational style, including the apostrophe in “Lovin’.” That informal wording helped distinguish it from older McDonald’s slogans such as “You Deserve a Break Today,” which had been used in the 1970s. The two slogans are therefore linked to different eras of the company’s advertising history.
The campaign also became associated with a distinctive five-note musical motif. Justin Timberlake appeared in an early English-language advertising execution, but the slogan itself is the answer to the branding question. Its continuing use made it one of McDonald’s most durable modern marketing lines.