There's a spooky theory about Kate Middleton's outfit to introduce Prince Louis

(Image credit: 2018 Anwar Hussein)

When the Duchess of Cambridge gave birth to Prince Louis on 23rd April 2018 at St Mary's Hospital, she carried on a royal tradition: introducing the new baby to the world, on the steps of the Lindo Wing. She had previously done so with Prince George and Princess Charlotte.

On this occasion, Catherine wore a red dress with a white lace Peter Pan collar by Jenny Packham. At the time, many compared it to the red outfit worn by Princess Diana when she just gave birth to Prince Harry.

It's true they were very similar styles, especially with the white collar and vibrant hue. Plus, it wouldn't be the first time Kate had paid tribute to her late mother-in-law.

However, Twitter users have since made a spookier comparison: with Mia Farrow in horror movie Rosemary's Baby.

The actress also wore a red dress with lace collar in the movie, which centres around a young wife being tricked into having the devil's baby.

When you look at the outfits side by side, the resemblance is quite uncanny, though I'm pretty sure Kate wouldn't have made the connection.

GET THE LOOK

MARC JACOBS The Berlin polka-dot minidress, £504 at MyTheresa

MARC JACOBS The Berlin polka-dot minidress, £504 at MyTheresa

The Chilling Witch Short Dress, £17 at Amazon

The Chilling Witch Short Dress, £17 at Amazon

Red lace dress, was £108.18 now £54.09 (50% off) at Etsy

Red lace dress, was £108.18 now £54.09 (50% off) at Etsy

Perhaps Jenny Packham took inspiration from the movie, or perhaps not. Either way, you've got to admire the investigative work of royal fans.

Penny Goldstone

Penny Goldstone is the Contributing Fashion Editor at Marie Claire UK. She writes about catwalk trends and the latest high street and Instagram sartorial must-haves. She also helms the Women Who Win franchise.

She has worked in fashion for over 10 years, contributing to publications such as Cosmopolitan, Red, Good Housekeeping, and Stylist.