The Brooksbanks - Jack's younger brother and his proud parents George and Nicola Brooksbank - looked delighted.
As opposed to acknowledging her nephew's baby news, she opted to thank designer Emanuel Ungaro for the "amazing dress" instead.
Meghan's outfit choice at the wedding sparked pregnancy rumours.
While it was Eugenie's big day in the spotlight, that's definitely a way to steal a little of the limelight.
The couple made the announcement on October 15, but they actually told the whole royal family at Princess Eugenie's wedding on October 15.
Meghan's loose-fitting Givenchy coat dress at the wedding had already sparked plenty of speculation about a royal baby.
A Kensington Palace spokesman said: "Their Royal Highnesses The Duke and Duchess of Sussex are very pleased to announce that The Duchess of Sussex is expecting a baby in the Spring of 2019".
Eugenie is the granddaughter of Queen Elizabeth II and ninth in line to the British throne.
The happy news was announced hours after the Duke and Duchess of Sussex touched down in Sydney for their first major global tour since their wedding in May.
The photographs also mark another significant event - the first time Prince Philip has been spotted in the same room with the Duchess of York since the early 1990s.
It comes after Prince Andrew rejected calls from within Buckingham Palace for a more modest wedding for Eugenie and Jack amid concerns about the public cost. The eight cuties are clad in their custom looks by Amaia Kids, the pageboys wearing navy trousers and white shirts and the bridesmaids clad in white dresses, all featuring a strip of patterned fabric from a painting loved by the couple, Here by Mark Bradford.