Answer: kittykelley

AnswerCrossword Clue
KITTYKELLEY

Poison-pen biographer

KITTYKELLEY

Big name in unauthorized bios

KITTYKELLEY

Controversial "Jackie Oh!" author

KITTYKELLEY
Celebrity biographer of note
KITTYKELLEY
Biographer biographized in "Poison Pen"
KITTYKELLEY"Jackie Oh!" author