The chapel holds tremendous significance for the royal family: Louis' elder brother Prince George was also christened there, and the chapel was where the late Princess Diana's body was laid before her funeral.
While many eyes were on the 11-week-old royal baby who has not been seen in public since his birth on April 23, fans of the famous family were also curious to see what Kate would be wearing to such a special occasion.
For the christening of George, Kate and Will's first born, in October 2013, Kate again wore a cream Alexander McQueen coat-dress, this one with a large ruffle down the center of her chest and on her waist. Sources said it had not been made on health grounds. As the palace further explains, "the original gown was subsequently worn for all Royal christenings, including The Queen, her children and her grandchildren".
Three years later, Kate was seen in the dress again during a garden party at Buckingham Palace in honour of the Queen. The first baby to wear the new version was James, Viscount Severn, at his christening in 2008, the palace noted; he is the youngest of the Queen's eight grandchildren.
Catherine, Duchess of Cambridge and Princess Charlotte of Cambridge arrive at the Church of St Mary Magdalene on the Sandringham Estate for the Christening of Princess Charlotte on July 5, 2015.
Kate Middleton at Princess Charlotte's christening.
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