Kate Middleton and Princess Mary look like twins on royal outing in Denmark

Kate Middleton and Princess Mary cut identical figures as they stepped out in Denmark overnight, as the pair reunited for the first time in years.

Kate Middleton and Crown Princess Mary of Denmark looked as though they could pass as sisters during a royal outing in Copenhagen.

The two future Queens joined forces with Queen Margrethe II for an audience at Christian IX’s Palace yesterday, as part of the Duchess of Cambridge’s two-day tour of the city.

Kate, 40, and Australian-born Mary, 50, cut stylish figures in tailored coats and identical brunette blow waves as they posed for official photos outside the Palace.

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Catherine, Duchess of Cambridge and Mary, Crown Princess of Denmark attend Christian IX's Palace. Picture: Chris Jackson/Getty Images

The Duchess is on a working visit in Denmark with The Royal Foundation Centre for Early Childhood, where she was greeted by the Danish royals. Picture: Chris Jackson/Getty Images

The Duchess, who was wearing a $5600 Catherine Walker coat dress for the engagement, is on a solo-visit of Denmark to hear about their approach to early years learning.

Kate later joined Mary to visit the Danner Crisis Center and shelter, which is supported by the Mary Foundation, which endeavours to protect women and children from domestic violence.

It was the first time the pair had reunited since their official outing at the Royal Ascot in 2016.

The royals’ visited the Danner Crisis Center and shelter in Copenhagen. Picture: Mads Claus Rasmussen / Ritzau Scanpix / AFP

Kate and Mary, who first met in 2011, are two of the most powerful forces in their respective Royal Families, despite them both not being born into royal life.

Mary, a mother-of-four, was born a commoner in Tasmania, Australia, meeting her now-husband Frederik, Crown Prince of Denmark, during the 2000 Sydney Olympics at a bar.

Kate, who shares three children with Prince William, met the future King of England in 2001 while they were students at the University of St Andrews in Scotland.

The royal pair have been close friends since 2011. Picture: Alastair Grant – Pool/Getty Images

Kate and Mary are both future Queens. Picture: Mads Claus Rasmussen / Ritzau Scanpix / AFP

Their dual-outing comes after Kate had earlier met with parents and children at a school in the city, where she revealed she often jokes to William she wants a fourth child.

“It makes me very broody,” Kate admitted to researchers from the Copenhagen Infant Mental Health Project during a visit to the University of Copenhagen.

“William always worries about me meeting under-one-year-olds … I come home saying, ‘Let’s have another one.’”

The pair share Prince George, 8, Princess Charlotte, 6, and Prince Louis, 3.