“I’m lovin’ it” became McDonald’s global tagline after the campaign launched in 2003.
McDonald’s introduced the campaign internationally in September 2003. The phrase was written in lowercase in much of the branding, giving it a casual, conversational appearance. It was designed to express enjoyment and fit a wide range of advertisements, products, and markets.
The campaign is strongly associated with a song performed by Justin Timberlake. German advertising agency Heye & Partner developed the concept, and the campaign was adapted for worldwide use. McDonald’s retained the phrase for many years, making it one of the company’s longest-running global taglines.
A common confusion concerns the phrase’s origin and the performer’s role. Timberlake performed and appeared in promotional material, but the singer did not independently create McDonald’s entire campaign. The tagline also differs from earlier McDonald’s slogans, including “You Deserve a Break Today,” which belonged to a separate advertising era.