Royal fans split over who Prince Louis most looks like - so is it George, Charlotte or someone else?

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Royal fans are split over who Prince Louis looks like. (Duchess of Cambridge)

Royal fans are split over who Prince Louis looks most like as the Duke and Duchess of Cambridge released new pictures of the young prince to mark his second birthday.

Louis, who is fifth in line to the throne, looks grown up in the new images, dressed in a blue gingham shirt and with his hair combed neatly.

Some fans are convinced he is the image of his older brother Prince George, who is six years old.

But some say the prince may look like George but has the colouring of his sister, Princess Charlotte, who is four years old.

Other royal fans have gone further back in the generations to look for similarities.

PANGBOURNE, UNITED KINGDOM - UNDATED:  In this undated collect photo provided by St Andrew's School, Kate Middleton (front row, C) is pictured in a hockey team photo during her time as a pupil at St Andrew's School in Pangbourne, Berkshire, England (1986-1995). Catherine, Duchess of Cambridge re-visited her former school on November 30, 2012 to take part in a day of activities and festivities to mark the occasion of St Andrew's Day. The Duchess visited the Pre-Prep School for under-5s, unveiled a plaque to officially open a new artificial turf playing field and met members of the school's hockey team, which she played for during her time as a pupil at the school. She was also given a private tour of the school and watched the school's Progressive Games which are traditional games played indoors by teachers and students on St Andrew's Day.  (Photo provided by St Andrew's School - WPA Pool/Getty Images)
Kate as a pupil at St Andrew's School in Pangbourne. (Getty Images)
The parents of Kate Middleton, Michael and Carole (L), make a statement on the engagement of their daughter to Prince William, outside their home near the Berkshire village of Bucklebury November 16, 2010. Britain's Prince William is to marry his long-term girlfriend Kate Middleton next year, after an on-off courtship lasting nearly a decade, bringing months of speculation about his intentions to an end.  REUTERS/Stefan Rousseau/POOL   (BRITAIN - Tags: ROYALS PROFILE ENTERTAINMENT SOCIETY)
Royal fans think Louis looks like his grandfather, Michael Middleton. (Reuters)

Some say the two-year-old looks like his grandfather, Kate’s dad Michael Middleton.

Debating the prince’s lookalikes, one said: “He looks so much like Kate’s Dad! Wow!”

Another said: “Mom's eyes, mom's smile. He's adorable.”

Read more: 'Instagram vs reality': Two more playful photos of Prince Louis released to celebrate second birthday

One fan noted: “Duchess Kate your cutie pie looks exactly like your father!”

Another added: “I almost confused him with his brother.”

One said: “He is a total mix of George and Charlotte!”

There are also comparisons with Kate herself, but some fans have noticed another royal link.

When Prince Edward, the Queen’s youngest son and Prince Louis’s uncle, celebrated his birthday, the Royal Family shared some photos from his childhood, and some thought he looked like his nephew.

One said: “Prince Edward as a baby looks a bit like George and Louis.”

Read more: Chocolate cake and gun salutes: How the Royal Family celebrates birthdays

BUCKLEBURY, BERKSHIRE - DECEMBER 25:  Prince George of Cambridge attends Church on Christmas Day on December 25, 2016 in Bucklebury, Berkshire.  (Photo by Samir Hussein/Samir Hussein/WireImage)
Some spot the likeness between Louis and George, seen here aged 2 in 2016. (Getty Images)
WINDSOR, UNITED KINGDOM - OCTOBER 12: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 24 HOURS AFTER CREATE DATE AND TIME) Princess Charlotte of Cambridge attends the wedding of Princess Eugenie of York and Jack Brooksbank at St George's Chapel on October 12, 2018 in Windsor, England. (Photo by Pool/Max Mumby/Getty Images)
Others think Louis has the same darker hair as his sister. (Getty Images)

Read more: 'A beautiful photo': Previously unseen image of Prince Charles hugging Louis a hit with fans

Sometime family similarities can even confuse the royals themselves, as happened once with Prince William.

The Duke of Cambridge, 37, mistook a picture of himself as a child to one of his daughter Charlotte.

Cakes, decorated with picture frames featuring images of Britain's Prince William, Duke of Cambridge and Britain's Catherine, Duchess of Cambridge are picture during their visit to the Khidmat Centre in Bradford on January 15, 2020, where they to learned about the activities and workshops offered by the centre. (Photo by Charlotte Graham / POOL / AFP) (Photo by CHARLOTTE GRAHAM/POOL/AFP via Getty Images)
Some of the images which led to the confusion from William between him and his daughter. (Getty Images)
TETBURY, UNITED KINGDOM - JULY 18:  Prince William In Parachute Regiment Uniform In The Gardens Of His Home Highgrove House Saluting.  (Photo by Tim Graham Photo Library via Getty Images)
Charlotte has previously been compared to her father. (Getty Images)

During a visit to Khidmat Centre in Bradford earlier this year, he was given a cupcake with a baby photo on top of it.

He asked: “Is that me? Or is that Charlotte? Is that me?”

Looking to his wife and the baker, he said: “Is that me? Oh my goodness that looks just like Charlotte, that is incredible.”

Prince George and Charlotte have both been compared to their father, and to Princess Diana, their grandmother.