The Milk Mustache idea was generated by a group of secretaries at Bozell, the advertising agency which won the Milk (or "milk") print campaign. It was the result of an open call to all agency employees for Milk ideas.

"How about doing celebrities with milk mustaches?" (or something to that effect), they said.

The rest is history. Or herstory, if you prefer.

Many, many producers and Creatives have attempted to take credit for the milk mustache. Hear ye, hear ye; it was secretaries.