Netizens have been missing Kate Middleton’s youngest son, Prince Louis.

The Duke and Duchess of Cambridge’s youngest son made his balcony debut on Trooping the Colour last June. Many fell in love with Prince Louis’ adorable wave even if he looked grumpy.

Royals fans are already missing Prince William and Middleton’s second son. One took to Twitter and shared two snaps of Prince Louis calling the young royal “boss baby.”

“I can’t wait to see prince louis aka boss baby again!” the netizen wrote.

“Me too!!! I miss him so much,” another netizen commented.

Another online user said that maybe Prince Louis would be so big by the time the public see him again. Meanwhile, another fan said that he just watched the movie “Boss Baby” and she was reminded of Prince Louis.

“I watched Boss Baby yesterday and thought of Louis the whole time! I love him!!!” the user wrote.

A clip shared on Instagram featured Princess Charlotte and Prince Louis doing royal wave before his balcony debut. The siblings are looking through the window and are waving the entire time.

Royal fans said that the clip was “cute” and “adorable.” Another said that the royal children’s sight was so “sweet.” A different netizen speculated that Princess Charlotte was teaching her younger brother how to wave to the crowd.

Princess Charlotte and Prince Louis seemed to inherit their love for waving from their dad, Prince William. When the Duke of Cambridge was younger, he also loved to wave to the crowd.

When Princess Diana, Prince William and Prince Harry visited Sarah Ferguson following Princess Beatrice’s birth, they were welcomed by Prince Andrew. Upon their arrival Prince William and Prince Harry kissed their uncle.

Prior to entering the hospital, Prince William waved to the photographers. When they were about to leave and ride their car, Prince William was still waving to the point that Princess Diana had to force his hand inside the vehicle because the future king could not stop waving.