Mick Jagger's pout is officially fit for a museum.

London's Victoria and Albert Museum announced Tuesday that it has bought the original artwork for The Rolling Stones' famous "lips" logo, inspired by the singer's mouth.

The museum said it bought the work at an auction in the United States for US$92,500.

The lips-and-tongue logo was designed by London art student John Pasche in 1970. It was first used on the band's "Sticky Fingers" album the next year, and has been part of the Stones' image ever since.

Victoria Broakes, head of exhibitions for the museum's theater and performance collections, said the design "is one of the first examples of a group using branding, and it has become arguably the world's most famous rock logo."

Broakes said the purchase was especially apt because Pasche used to visit the museum's collections for inspiration when he was a student at the Royal College of Art.

Pasche told The Guardian newspaper that the idea for the logo came "when I met Jagger for the first time at the Stones' offices. I went into this sort of wood-paneled boardroom, and there he was. Face to face with him, the first thing you were aware of was the size of his lips and his mouth."

Pasche said he would use the money from the sale to send his 11-year-old son to private school.