It's been revealed the Duke and Duchess told the royal family on Friday, when they attended Princess Eugenie and Jack Brooksbank's wedding.
One of the photographs released Saturday shows the couple sharing a kiss in the Scottish State Coach as it returns to Windsor Castle at the end of the procession.
That's the same church where "Suits" actress Meghan Markle married Prince Harry in May this year, and Eugenie was driven in the same auto that took Kate Middleton to her 2011 wedding to Prince William, which took place at Westminster Abbey: the 1977 Rolls Royce Phantom VI.
And finally, the pièce de résistance: A breathtaking full-length shot of Eugenie's reception gown by Zac Posen.
Princess Eugenie's blowout marriage to Jack Brooksbank needles palace
As it's hard to see the brooch in this picture, we're hoping the Palace releases another photo of Eugenie where it is in frame. A group photograph taken in the White Drawing Room at Windsor shows both the bride and groom's families.
She had been forced to sit further back in the same church during Prince Harry's wedding to Meghan Markle. The White Rose of York is subtly embroidered on both the shoulder and back which hold together the cape. They welcomed their daughters Princess Beatrice in 1988 and 1990. Harper's Bazaar said the words were in Eugenie's own handwriting.
At first, it looked a little awkward considering how far apart William and Kate were sitting, but the Duchess apparently insisted in keeping her hand firmly placed on her husband's thigh for quite some time.
British photographer Mr Bramall said it was "an honour and a privilege" to be invited to photograph the couple.
Fashion editor Antonia Kraskowski writes that Eugenie looked "radiant" in the gown, which included "details meaningful to the bride and her new husband".
It's also widely expected that the baby will not be referred to as "His or Her Royal Highness (HRH)' and unlike their cousins George, Charlotte and Louis, will not be called "prince" or 'princess".