To catch up on all things royal family, make sure you check out our Royal Hub. We’ve got you completely covered.
It was a tale that had all the makings of an adorably cute family moment, caught on VHS for the whole family to re-watch at Christmas until eternity.
Sadly, an unfortunate wardrobe malfunction made the encounter with royalty memorable for all the wrong reasons.
Lily and her brother, six and five at the time, were being very good by helping out their parents at the 1992 London premiere of Hear My Song, a film produced by their mother.
The kids, dressed up in cute wedding-like outfits, were given the very important task of greeting a then-31-year-old Princess Diana with gifts.
This is where things went horribly wrong.
In her book, Lily wrote that Alfie found himself negotiating a painful wardrobe malfunction moments before shaking the Princess' hand.
"Diana the Princess of Wales came to the premiere. I was a flower girl and gave her a posy, Alfie had a box of handkerchiefs to give her but somehow he got his k*** caught in his trouser zip moments before meeting her," the book reads, Daily Mail reports.
When Princess Diana approached the children and saw Alfie crying, understandably, she asked the small boy what was wrong.