The Dress Code at Princess Maria Olympia's 21st Birthday Will Blow Your Mind

By Sarah Wasilak

Updated on 7/5/2017 at 1:40 PM

For Princess Olympia of Greece's 21st birthday celebration, she teamed up with her father Prince Pavlos and threw a party at The Costswolds in the UK. Prince Pavlos turned 50, so naturally, the event's hashtag was "#5021revolution", and the dress code instructed guests to "revolutionize" their black tie.

Princess Olympia chose a glittering Steven Khalil bodysuit for the occasion, which came equipped with a long, sheer champagne train, and the fashion maven stood tall in rainbow Gucci platforms. Headpieces and fascinators from the likes of Philip Treacy were in abundance, and there was no limit to the ornamentation on anyone's outfit. Read on for a glimpse into the royal family's memorable evening.

Maria Olympia's Steven Khalil Gown Revealed Her Rainbow Gucci Platforms

She Wore a Sparkling Headpiece to Match the Look

Guests Dressed Up in Every Color of the Rainbow

They Posed Against Playful Backdrops

And Wore Fascinators Designed By Philip Treacy, Who Creates Pieces For Kate Middleton

Nicky Hilton Stood by Maria Olympia's Side in a Romantic White Dress

The Gowns Were Appropriate For a Black-Tie Wedding

But the Accessories Were Wild Enough For a Costume Party

Princess Maria Olympia Showed Off Her Gucci Shoes

There Was Definitely No Shortage of Glamour