Meghan Markle and Prince Harry's fans have caught sight of a significant little detail from one year old Archie's birthday video.
In a clip shared on charity Save The Children's social media pages, the little boy could be seen with his 38 year old mother reading a book called "Duck!
Rabbit!" by Amy Krouse Rosenthal. As the mother-son duo turned paged after page, giggling as they progressed through it, eagle-eyed fans noticed an almost invisible detail on the cover of the short book.
Zooming into the top right hand side corner of the book, there is a clue that Archie might actually be following in the footsteps of Oprah Winfrey, Emma Watson and Reece Witherspoon – who all have their own book clubs.