“I’m lovin’ it” launched in 2003 as McDonald’s global campaign theme.
The campaign was introduced internationally in September 2003 and used a short, conversational phrase rather than a product-specific claim. Its wording was designed to communicate enjoyment and fit many languages, markets, and advertising formats.
The campaign became closely associated with a musical signature and the “ba da ba ba ba” vocal hook. Justin Timberlake appeared in an early campaign-related music video, while the slogan itself became a long-running part of McDonald’s branding.
It is distinct from McDonald’s earlier slogans, including “You Deserve a Break Today,” which was used in the 1970s. The 2003 campaign represented a shift toward a consistent global identity while allowing local advertising to adapt the message.