"The family are delighted and August is very much looking forward to being a big brother," said the Palace in a statement.
The couple are already proud parents to son August Philip Hawke Brooksbank who was born in February 2021.
Eugenie took to her personal Instagram account to share the exciting news alongside an adorable photo that showed August kissing her growing bump. "We're so excited to share that there will be a new addition to our family this summer."
Eugenie confirmed the news on Instagram
The announcement comes just a couple of weeks before Eugenie and her husband Jack are set to celebrate their son's second birthday. The little boy was born at the Portland Hospital on 9 February 2021 – and Eugenie recently revealed how becoming a mother had prompted her to make some big changes in her life. The latest revelation came after Eugenie liftied the lid in December on her family's shock move to Portugal.
Royal family's reactions to Princess Eugenie's baby news
Sarah, Duchess of York shared her joy at becoming a grandmother for a third time.
"You will be sharing puddles, Augie ! Superb news, Granny heaven…. So deeply grateful," she captioned the post.
Sarah shared this photograph of her grandson, August
In an exclusive interview and photoshoot with HELLO! at luxury hotel Coworth Park in Berkshire in 2021, Sarah's face lit up when she spoke about her baby grandson, August.
"Well, baby August is phenomenal," she says. "He's a very strong little chap. August thinks I'm hysterical. And it's so funny when I look at him because I make him laugh, and he goes all shy and flirts with me. Just shows you: boys. Boys!
"You know, he's just so, so cool but really, I'm very proud of Eugenie – and Jack [Brooksbank] because they're very good parents and, as any new young parents out there know, it's very challenging, isn't it? And they worry so much about the night duty and getting it right, and are they good enough? And are they getting it right? And Eugenie is really a great mother so I'm very proud of her.
Sarah Ferguson is a proud grandmother
"But ultimately, I say: 'You've done so well, just keep your confidence.' Mothering is intuitive, so you don't need to be told: you'll know."
Meanwhile, Eugenie's brother-in-law, Edoardo Mapelli Mozzi, commented on her Instagram announcement with two heart emojis.
Where will Princess Eugenie's second baby be in the line of succession?
The tot will be 13th in line to the throne after big brother, August. This also means changes for the rest of the royal family, with Eugenie's uncle, the Earl of Wessex, dropping down to 14th, and his children, James, Viscount Severn, and Lady Louise Windsor, going down to 15th and 16th.
Meanwhile, Eugenie's aunt, the Princess Royal, will also become 17th in line to the throne, having been third in line at the time of her birth in 1950.
Princess Anne's children, Peter Phillips and Zara Tindall, will also move down one place in the line of succession, along with their children - Peter is father to Savannah and Isla Phillips, while Zara shares Mia, Lena and Lucas with husband, Mike Tindall.
Will Princess Eugenie's second baby have a royal title?
It's unlikely that Eugenie and Jack's baby will have a royal title, as their children will take their rank from their father. He or she will be plain Master or Miss.
Where will Princess Eugenie's second baby be born?
Princess Eugenie could decide to have her second child at The Portland Hospital in London - where she and her son, August, were both born in 1990 and 2021 respectively.
Eugenie leaving hospital with baby August in February 2021
Alternatively, she could opt for the Lindo Wing at St Mary's Hospital in Paddington, where the Princess of Wales had Prince George, Princess Charlotte and Prince Louis.
Meanwhile, Princess Beatrice welcomed her daughter, Sienna, at the Chelsea and Westminster Hospital in September 2021.
Princess Eugenie's second baby's royal relatives
Eugenie's sister Princess Beatrice is also a mother of one, and her daughter Sienna, who she shares with Edoardo Mapelli Mozzi, was born just seven months after August, in September 2021.
The sisters don't always act in such harmony, however. In this video you can see the ways in which they are different.
WATCH: Beatrice and Eugenie differences
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