Eugenie, 29, shared a series of throwback photos from the 2018 Chelsea Flower Show.
She also decided to skip her "dear" relative Lady Gabriella Windsor's wedding to Thomas Kingston last Saturday.
Instead, the Princess of York took to Instagram to mark another special occasion - which she also failed to make an appearance at.
"Congratulations dear Ella and Tom!! ❤️👰🏼🤵🏼 You look absolutely stunning."