American talk show host Oprah Winfrey is the richest woman in entertainment, according to business magazine Forbes.

Its latest poll estimates her net worth at $1.5bn (760m), based on the $225m (114m) she is said to earn from TV, radio, magazines and other ventures.

However, the magazine omitted "non-working celebs" like Barbra Streisand "who essentially live off royalties" and "old Hollywood types" like Elizabeth Taylor.

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