The dress was main highlight in a deal of almost 400 pieces arranged Turner Classic Movies that netted overall revenues of over $4 million and by the auction house.
It’s but one of just two entire Dorothy costumes said Bonhams’ manager memorabilia, Catherine Williamson.
“The dress is known as an authentic and eternal icon of classic Hollywood,” she added.
Garland was among the top-beloved performers of the Hollywood Golden Age who starred in the 1939 “The Wizard of Oz” as a teen.
The film won two Oscars, for greatest music and best song, and stays a much-loved family classic.
The next most expensive item in the deal was a suit worn by Marilyn Monroe in “Gentlemen Prefer Blondes,” which brought in $425,000.
A fantastic ticket, a prop from “Willy Wonka and the Chocolate Factory,” on the basis of the novel by British writer Roald Dahl, sold for $35,000.