Princess Diana was the 'first person to rattle the cage of the monarchy', says royal biographer.

msn.com:

Princess Diana was the “first person to rattle the cage of the monarchy”, claims the Queen’ Elizabeth II's biographer. The late Princess of Wales - who died in August 1997 in a car crash in Paris aged 36 alongside her boyfriend Dodi Al-Fayed - was the only person “in living memory” to question how the institution runs and operates but didn’t do it “intentionally” with her AIDS and landmine activism and the way she captured the national imagination.

Ingrid Seward told PEOPLE magazine: "Diana was the first person to rattle the cage of the monarchy within living memory. "I don't think Diana went out intentionally to change the family.

She did it because that was the way she was. " Her death - which sparked a wave of grief across the world - caused the Queen to be widely condemned for her lack of public mourning but has used the lessons learned from the backlash and learnt from her "legacy".

Ingrid said: "The Queen can now see Diana's legacy is a huge force for good. " Princess Diana - who caught flack from the royal family about how she courted the press - was involved in an unhappy marriage with Prince Charles, who married her in 1981 when she was 20 and he was 32, after he was still involved with Camilla Parker-Bowles, who he eventually married in 2005.