The first joint biography of the women who have shaped - and shaken - the modern Royal Family.

Diana. Camilla. Catherine. Meghan.

Outsiders by birth, insiders by marriage. Four women united by their decision to enter the most famous family in the world, and by their place in the centre of its greatest upheavals.

From Diana's emotional revolution to Camilla's unlikely ascent, from Meghan's dramatic break to Catherine's quiet consolidation of power, these are the true stories of the women who have shaped - and shaken - the modern royal family.

Drawing on decades of experience as one of Britain's most trusted royal correspondents, Simon Vigar takes readers behind palace walls to reveal the private tensions, public battles and shifting alliances that have shaped the House of Windsor.

Insightful, revealing and rich with untold detail this is the definitive story of the women who didn't just marry into the Royal Family, but transformed it forever.