Who sang about "Clouds in my coffee" in the 1970's?

Carly Simon sang about “clouds in my coffee” in her 1972 hit “You’re So Vain.”

The memorable line appears in the chorus of the song, which Simon wrote and released as a single from her album No Secrets. “You’re So Vain” portrays a self-absorbed former lover surrounded by glamorous details such as yachts, Learjets, and a horse at Saratoga. The coffee image adds an oddly intimate, surreal touch to the song’s portrait of vanity.

Simon later explained that the lyric was inspired by a real observation. Her piano player, Billy Mernit, noticed clouds reflected in a cup of coffee she was drinking. The phrase became one of the most recognizable images in 1970s pop music.

The song was released in November 1972 and reached No. 1 in the United States, Canada, Australia, and New Zealand. Listeners have long debated whom the song describes; Simon has said it refers to three men, publicly confirming details about Warren Beatty while keeping the full mystery unresolved.