A collection of Princess Diana's letters were recently sold at an auction.

Lay's Auctioneers revealed that 32 intimate letters were sold for $169,663.

These private messages were sent to the late royal's closest friends.

The messages detailed Diana's thoughts in the last years of her life.

The former Princess of Wales shared her concerns about her divorce.

Diana revealed in a letter that her calls in the Palace was being monitored.

She also expressed regret about the "ugly" part of her divorce from then-Prince Charles.

Her friends auctioned off her letters to fund Diana's favorite charities.

Last month, Kim Kardashian purchased the late Princess's amethyst-encrusted crucifix.