On Wednesday, she wore pink.

Meghan Markle surprised royal fans with an unexpected Instagram appearance on December 11, laughing with friends at a hilarious pink baby shower photo shared by the Duchess of Sussex's best friend Kelly McGee Zajfen.

“Love 💕theme. Wear pink! Celebrating our soon to be born sweet baby girl!” Zazifen wrote. “Adore @samanthamstone and can't wait to meet baby Stone ✨💕she is a lucky girl to have a mommy like you.”

December may not be the time to expect pastel pinks and sleeveless dresses, but California-based Meghan shined in a summery linen shift dress from Australian brand Posse at the event. She smiled happily next to Zaifeng and mommy-to-be Stone in an adorable pink tweed mini-dress.

The Duchess's square-necked midi proved to be the perfect baby-girl gift in a sleeveless pink satin dress coordinated by Stone, who is Chief Membership Officer at Soho House. Posse is a familiar brand to the Duchess of Sussex, who wore a black and white striped maxi dress from the brand

on a dinner date with Prince Harry before his birthday in August.

Along with a Pretty in Pink moment, the Duchess recently stepped out in a black strapless Oscar de la Renta gown to honor her friend Tyler Perry. And earlier this fall, she wore her signature neutral colors (i.e., a resettled turtleneck and Gabriella Hart pants) while chatting with Marie Claire and the ladies of the Wellcome Project.

Returning to Posse's look, the eco-conscious label is also a favorite of celebrities like Katie Holmes and Sofia Richie. The brand produces in limited quantities, so when Posse releases an item they have to act quickly, and sadly the Duchess dress is sold out.

However, I rounded up some similar options to get the Princess Meghan look. A fuzzy cardigan and tights transform the pink frock into a holiday lady.