Other members of the Royal Family made their Easter debut when they were four years old.
Prince Louis was four years old when he attended the annual Easter church service in Windsor in 2023.
Meanwhile, Prince William was also four when he made his first appearance on Easter back in 1986.
Lucas’s last appearance before New Year’s Day took place back in September when he joined his family at the Burghley Horse Trials in Lincolnshire.
The youngster, much like his cousin Louis, stole the show with his cheeky antics.
He was seen trying to pull sister Lena off a crate she was sitting as he cheekily looked at dad Mike.
Princess Anne’s youngest grandchild is 24th in line to the throne and the last person to be listed on the line of succession on the Royal Family’s website.
The young royal does not bear a title due to Anne’s decision not to give her children, Zara and Peter Phillips a royal title.