The tiny heir to Britain’s throne had a big milestone event this week.

Prince George had his christening.

In this case, a christening is a religious Christian ceremony during which a baby is baptized with holy water.

The water used in the ceremony was from the River Jordan. The river has significance to Christians because it is where Jesus was baptized, according to the Bible.

The three-month-old son of Prince William and Kate Middleton is third in line to the British throne. In other words, he could one day be the King of England.

The ceremony took place in St. James’s Palace in England.

There were only 22 people at the christening, but they included some pretty big names.

The Queen was there, as well as the three other people who are next in line to claim her throne.