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Today, on the eve of the 20th anniversary of Princess Diana’s death, Prince William and Prince Harry made an emotional return to Kensington Palace, the place they resided with their mother. The princes toured an outdoor area that was formerly known as the Sunken Garden but was recently transformed into a sea of white roses, gladioli, cosmos and white lilies (the White Garden) in honor of Diana’s life, style and legacy. Keep reading for six of the day's best moments.

Prince Harry and Prince William 1
Samir Hussein/Getty Images & Karwai Tang/Getty Images

1. When They Hand-Delivered Bouquets

Prince William and Prince Harry were just two of many Princess Diana admirers who braved the stormy London weather to pay tribute. The two men honored their late mother by adding flowers to a memorial located in front of Kensington Palace.

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Karwai Tang/Getty Images

2. And Thanked Well-Wishers for Their Support

Prince William greeted the crowds of people who showed up in honor of the garden’s unveiling.

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Chris Jackson/Getty Images

3. When They Admired the Growing Memorial

The brothers even took a moment to appreciate the nostalgic photos, heartfelt notes and various gifts that were left in Diana’s memory.

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Samir Hussein/Getty Images

4. And Met Up with Their Third Musketeer

Will’s wife Kate Middleton, the Duchess of Cambridge, accompanied the princes into the White Garden, which was planted with gorgeous flowers and foliage.

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Kirsty Wigglesworth/Getty Images

5. When They Took in the Garden’s Gorgeous Views

While there, they chatted with friends, colleagues and people who were associated with Diana at the time of her death, including Sean Harkin, who designed the garden; Graham Dillamore, who worked for the late princess; and representatives from the charities she was involved with.

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Samir Hussein/Getty Images

6. And Proved They Grew Up to be Strong, Handsome Gentlemen

Bravo, Will and Harry. We have no doubt their mother be proud.

RELATED: 10 Things We Learned & Loved From HBO's Princess Diana Documentary

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