They’ve been having a blast as brand new parents, and Prince William and Kate Middleton are gearing up for the christening of their baby boy Prince George .

According to a Kensington Palace spokesperson, the little heir’s 45-minute ceremony will take place on October 23rd at St. James Palace’s chapel.

Queen Elizabeth, Prince Philip, Prince Charles, Lady Camilla, Prince Harry, and the Middletons are all expected to attend the service, conducted by the Archbishop of Canterbury.

And while Charles, the Queen, and William all had their christenings at Buckingham Palace, Will and Kate supposedly chose St. James’ chapel in honor of the late Princess Diana.