BOSTON (AP) - Patricia Kennedy Lawford, the sister of President John F. Kennedy and wife of actor Peter Lawford, died at her New York home of complications of pneumonia yesterday, according to a family statement. She was 82.

"My sister Pat is irreplaceable," Democratic Sen. Senator Edward M. Kennedy said in a statement. "Everyone who knew Pat adored her. She was admired for her great style, for her love and support of the arts, her wit and generosity - and for the singular sense of wonder and joy she brought into our lives."

Lawford is survived by four children and 10 grandchildren. Memorial and funeral arrangements are pending.