"Bubbles", originally titled "A Child's World", is a painting by Sir John Everett Millais that became famous when it was used over many generations in advertisements for Pears soap. During Millais's lifetime it led to widespread debate about the relationship between art and advertising.

The painting was one of many child pictures for which Millais had become well known in his later years. It was modelled by his five-year-old grandson William Milbourne James and was based on 17th-century Dutch precursors in the tradition of vanitas imagery, which commented upon the transience of life. These sometimes depicted young boys blowing bubbles, typically set against skulls and other signs of death.

The painting portrays a young golden-haired boy looking up at a bubble, symbolising the beauty and fragility of life. On one side of him is a young plant growing in a pot, emblematic of life, and on the other is a fallen broken pot, emblematic of death. He is spot-lit against a gloomy background.

The painting was first exhibited in 1886 under the title A Child's World at the Grosvenor Gallery in London.

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