Oprah - reduced to tears... getting a big sendoff ahead of her show's big finale.

FOX News Radio's Jennifer Keiper was there:

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Chicago bid farewell to Oprah in style. Her crew threw her a little party they called "Surprise Oprah! A Farewell Spectacular."

Thousands of lucky fans attended the event at Chicago's United Center... including Rashi Spillers:

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This excited fan was among the roughly 23,000 people who got into the event at Chicago's United Center:

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Tom Hanks was one special guest who got the large crowd going Tuesday night:

(this audio courtesy of HARPO Productions)

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Oprah's show has been airing for the past 25 years. She says she'll devote more time to her network, "OWN".