According to royal expert Richard Fitzwilliams, the five-month old is set to make an appearance alongside the royal nanny Maria Borrallo.
“It is possible Louis might appear with a nanny,” Richard told The Express.
“The wedding will be undoubtedly be a joyous, colourful and fashionable affair.”
Prince Louis’ last public appearance was at his christening over two months ago, so it would be a special and rare appearance for the adorable tot.
But in the event, the young baby boy can’t make it to the wedding, his next scheduled appearance will be the royal official Christmas portrait.
With the wedding just days away, announcements have been made about the cake, wedding service and military involvement.
The Dean of Windsor is set to give the military address as the couple exchange vows.
The Royal Philharmonic Orchestra are also set to perform along with Italian singer-songwriter Andrea Bocelli.
The State Trumpeters from the Band of the Household Cavalry will also perform a fanfare at the service.
With the cake baker Sophie Cabot is creating a red velvet-and-chocolate wedding cake, said to be “a traditional cake with a modern feel.”
Celebrity guests include George and Amal Clooney, David and Victoria Beckham, Robbie Williams and wife Ayda Field.