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KENNEDY SIBLINGS STAND IN AT WEDDING OF A COUSIN

SHARE KENNEDY SIBLINGS STAND IN AT WEDDING OF A COUSIN

John F. Kennedy Jr. was the best man and his sister, Caroline Kennedy Schlossberg, the maid of honor at a cousin's wedding. The ceremony also served as a memorial to their mother, the late Jacqueline Kennedy Onassis.

The siblings participated in Saturday's wedding of their cousin, Tony Radziwill, to fellow ABC newsmagazine producer Carole Ann DiFalco.