The Duke and Duchess of Cambridge have chosen two hymns, one lesson and two anthems for the christening of their daughter, Princess Charlotte.
The hymns are Praise to the Lord, The Almighty and Come Down, O Love Divine.
The lesson is from Matthew 18, verses 1-5, read by Mr. James Meade.
The anthems are I Will Sing With The Spirit and God Be In My Head, both by John Rutter.
Members of The Sandringham Church Choir are singing at the service.
The processional organ music is R. Vaughan Williams' Prelude on "Rhosymedre".
The recessional organ music is G. F. Handel's Overture and Allegro from Concerto VIII in A.
The Archbishop of Canterbury, the Most Reverend Justin Welby, is baptising Princess Charlotte. He is being supported by The Reverend Canon Jonathan Riviere, the Rector of the Sandringham group of parishes.