Oprah Winfrey celebrated the 10 year anniversary of her magazine, O, today in true Oprah fashion -- with a huge, celeb-filled charity walk.

Jennifer Hudson, Mary J. Blige, Gayle King and Dr. Oz were all on hand in NYC this morning for the "Live Your Best Life Walk" -- an event benefiting 10 different charities.

Missed the event but still wanna help? Check out O's website to find out how.

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