Princess Diana's pal says she would have loved a granddaughter

August 9, 1988. Young Prince Harry tries to hide behind his mother Princess Diana during a morning picture session at Marivent Palace. (Reuters)

Rosa Monckton was close friends with Princess Diana. So close that Diana was godmother to Monckton's daughter Domenica who was born with Down Syndrome. 

And on Saturday the disability activist remembered her great confidante as Diana's son Prince William welcomed his second child, a daughter, with Princess Kate.

Monckton took to social media to share how she feels Diana would have relished the birth of the princess.

Click here to see more photos of Princess Diana.