Miss Maud Elizabeth Daphne Marina Windsor was baptized today in a private ceremony at the Chapel Royal, St. James's Palace.
The infant is the first child of Lord and Lady Frederick Windsor, and the first grandchild of Prince and Princess Michael of Kent.
Lady Frederick continues to use her maiden name, Sophie Winkleman, professionally, as she is an actress.
Maud was born on August 15 in Los Angeles, where Lord Frederick works as a financial adviser.
Lord Frederick told Hello magazine: "It's also a beautiful, elegant name and it was always our first choice. Elizabeth is a tribute the Queen, Daphne is Sophie's grandmother, who she was very close to and Marina is my paternal grandmother."
Surprisingly, Maud wore the royal christening gown, which was also worn by Prince George, Savannah and Isla Phillips, and Lord Severn, son of the Earl and Countess of Wessex.
The gown was commissioned by Queen Elizabeth II to replace the original christening gown first worn in 1841 by Queen Victoria's first child, Princess Victoria.
The Earl of Wessex's daughter, Lady Louise, was the last to wear the original gown.
Prince Michael and his two children, Lord Frederick and Lady Gabriella, wore the original gown for their baptisms.
None of the other great-grandchildren of the late Prince George, Duke of Kent, wore the original baptismal gown. This was noted at the time of Lord Downpatrick's baptism.
The names of the godparents have not been released. I won't be surprised if Hello! has a nice spread.