Princess Estelle at the celebration of Mother Victoria's 40th birthday earlier this year. Photo: TT

Princess Leonore Lilian Maria, Princess Madeleine's first child, was born on February 20, 2014. Photo: Mr. Christopher O'Neill / Kungahuset.se

Princess Leonore and Prince Nicolas at the reception at Logården during Aunt Crown Princess Victoria's 40th birthday on July 14, 2017. Photo: TT

First meeting between cousins ​​Princess Leonore and Princess Estelle. Photo: Kungahuset

Princess Madeleine's second child, Prince Nicolas Paul Gustaf, was born on June 15, 2015. Photo: Kungahuset

Not easy to sit still for so long. Princesses Leonore and Estelle spewed loose during the baptism of Prince Nicolas. Photo: TT

Princess Madeleine with the niece Nicolas who 2018 will be big brother. Photo: TT

In 2016, Princess Estelle became big sister to Prince Oscar. Photo: Kungahuset

Prince Daniel with his son. Photo: TT

In 2016, Prince Carl Philip and Princess Sofia's first child, Prince Alexander, were also born. Photo: Kungahuset

Prince Alexander with mother Princess Sofia. Photo: TT

Prince Carl Philip, Princess Sofia with Gabriel and King Carl XVI Gustaf at Prince Gabriel's baptism. Photo: TT

Here is the first image of Princess Madeleine's and Chris O'Neill's latest additions. Photo: Christopher O'Neill, Royal House