Prince William turns 37: Meghan Markle and Prince Harry under fire for 'cold' birthday message

Did Meghan Markle and Prince Harry snub Prince William with a "cold" birthday post? That's what some fans of the royal family are saying.

The Duke of Cambridge turned 37 on Friday, June 21, and the official Kensington Royal Instagram page shared a sweet photo of William smiling into the camera to thank followers for the birthday wishes.

SEE ALSO: What Prince William and Kate Middleton 'realized' about their marriage after 'hurtful' cheating rumors

"Thank you everyone for your lovely wishes on The Duke of Cambridge's birthday!" the caption read.

In the comments of the post, Meghan and Harry's official Instagram account, Sussex Royal, commented, "Happy Birthday to the Duke of Cambridge!" seemingly in lieu of an actual post to honor his birthday. Naturally, the couple got heat from commenters who thought that a simple comment wasn't enough of a celebration.

"He's your brother," one person wrote. "REALLY?"

"Wow, pretty cold," another follower commented. "And petty. Grow up."

37 PHOTOS
Best photos of Prince William for his 37th birthday
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Best photos of Prince William for his 37th birthday

1982

The Princess of Wales with Prince William in 1982. 

1983

Prince William and Princess of Wales in the walled garden of Kensington Palace.

1984

Princess Diana Helping Prince William With A Jigsaw Puzzle Toy In His Playroom At Home In Kensington Palace.

1985

Prince William leaves Nursery School in London's Notting Hill, after his first day on September 24, 1985 in London, United Kingdom, With headmistress Jane Mynors, Diana, Princess of Wales, Charles, Prince of Wales, 24th September 1985.

1986

Prince William with his Shetland pony at Highgrove House in Doughton, Gloucestershire, 18th July 1986. 

1986

A yawn from Prince William, the 3-year-old son of the Prince and Princess of Wales, during the wedding ceremony of Sarah Ferguson and the Duke of York at Westminster Abbey. Seated next to the young Prince is his cousin, 6-year-old Laura Fellowes. 

1987

Prince William Attends The Christmas Day Service At St Georges Chapel, Windsor Castle. (Photo by Julian Parker/UK Press via Getty Images)

1987

Prince William wears a policeman's uniform as he sits on a police motorbike during a visit to the Windsor police in November 1987 in Windsor, England. (Photo by Anwar Hussein/Getty Images)

1988

Diana, The Princess of Wales with Prince Harry as he returns to his Nursery School in London's Notting Hill, after the Summer Break, accompanied by Prince William, who returns to his own School later this week. on September 13, 1988 in London, United Kingdom.

1989

A young Prince William stands in the middle of Windsor polo ground in July 1989 in Windsor, England. 

1990

HRH Princess Diana, The Princess of Wales, with her sons Prince William and Prince Harry. They are pictured at The International Horse Show in Olympia, West London. Prince William kissed and cuddled his mother, showing just how much he is glad to be back with her after breaking up from Ludgrove prep boarding school on Sunday. 

1990

Prince Charles holding the hand of his son, Prince William, at a polo match in Windsor, Berkshire, England, Great Britain, 16 June 1990. 

1991

Princess Diana with Prince William and Prince Harry in Waterproof Capes on the Maid of boat to see Niagra Falls.

1992

A young Prince William goes karting at Buckmore Park 'Playscape' on August 01, 1992 in Chatham, England. 

1993

Diana Princess Of Wales, Prince William & Prince Harry Visit The 'Thorpe Park' Amusement Park. 

1995

Prince William his first day at Eton in 1995.

1996

Charles, Prince of Wales with his sons Prince Harry of Wales and Prince William, Duke of Cambridge at winter sports in Klosters.

1997

Prince William, attends the annual Christmas Day service at Sandringham Church, on December 25, 1997 in Sandringham, England.

1998

The Prince Of Wales And Princes William & Harry Are Greeted By Crowds At Canada Place, Vancouver. 

2000

Prince William dressed as a prefect, with a union jack waistcoat at Eton in June 2000. at the Various in LONDON, United Kingdom. 

2001

Prince William On His First Day At St Andrews University, Scotland. 

2002

Prince William during a sports funday at Tidworth Polo Club raising money for Inspire.

2004 

HRH Prince Harry (L) and HRH Prince William leave along with other members of the Royal family after attending a Christmas Day service St. Mary Magdelene Church on December 25, 2003 in Norfolk, England.

2005

Prince William after he carried out a mock mountain rescue, abseiling down a rock face and guiding a stretcher to safety, Monday 12 December 2005. The 23-year-old royal, kitted out in a grey hard hat, made his controlled descent down the precarious 200ft drop using his feet to steady himself. 

2006

Prince William talks a homeless person at a Centrepoint homeless hostel during his visit to the center.

2008

Britain's Prince William (R) and Prince Harry (L) stand beside motorcycles on October 17, 2008 as they prepare to start the Enduro Africa 08 charity motorcycle ride next October 18 in Port Edward, some 150 km south-west of Durban, South Africa. 

2010

Prince William and Kate Middleton, during a photocall in the State Apartments of St James's Palace, London to mark their engagement. 

2011

Prince William and his wife Kate Middleton, who has been given the title of The Duchess of Cambridge, kiss on the balcony of Buckingham Palace, London, following their wedding at Westminster Abbey. 

2012

Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge leave the King Edward VII hospital where she has been treated for hyperemesis gravidarum, extreme morning sickness at King Edward VII Hospital on December 6, 2012.

2013

Prince WIlliam, Duke of Cambridge and Catherine, Duchess of Cambridge leave St Mary's Hospital in London, UK after the birth of Prince George on July 23, 2013.

2014

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge stand on the podium at the finish of stage one of the Tour de France on July 5, 2014 in Harrogate, England. 

2015

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge show off their new arrival, the Princess of Cambridge to the world outside the Lindo Wing of St. Mary's Hospital on May 2, 2015 in Paddington, London, England. 

2015

Prince William, Duke of Cambridge and Prince George of Cambridge walk past crowds as they leave the Church of St Mary Magdalene on the Sandringham Estate after the Christening of Princess Charlotte of Cambridge on July 5, 2015 in King's Lynn, England. 

2016

Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge with Prince Harry attend a Christmas party for volunteers at The Mix youth service on December 19, 2016 in London, England. The Mix youth service works with Their Royal Highnesses' Heads Together Campaign.

2017

Prince William, Duke of Cambridge and his wife Kate, the Duchess of Cambridge, walk with their children Prince George and Princess Charlotte to visit Airbus helicopters on the tarmac of the Airbus compound in Hamburg, northern Germany, on July 21, 2017. 

2018

Britain's Princess Charlotte of Cambridge and Britain's Prince George of Cambridge hold hands with their father, Britain's Prince William, Duke of Cambridge, as Britain's Prince Louis of Cambridge is carried by his mother, Britain's Catherine, Duchess of Cambridge after his christening service at the Chapel Royal, St James's Palace, London on July 9, 2018. 

2019

Prince Louis, Prince George, Prince William, Duke of Cambridge, Princess Charlotte and Catherine, Duchess of Cambridge appear on the balcony during Trooping The Colour, the Queen's annual birthday parade, on June 08, 2019 in London, England. 

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"Really Harry and Meghan, you could of [sic] done a little better," another person proclaimed. "Are you trying to get everyone not to like you? We want the 4 of you back don't lose that bond you had with your brother."

Other's called the comment "a shame" and wondered why there were "no birthday wishes for the future king at all" on their actual Instagram page.

SEE ALSO: Meghan Markle and Princess Eugenie are obsessed with these perfect pumps

While the Duke and Duchess of Sussex forewent a post for William's birthday, other member of the royal family did indeed share messages on their accounts: Clarence House, the account for Prince Charles and Camilla, Duchess of Cornwall, shared a sweet message for Charles' oldest son with a photo from 1984, the official Royal Family account shared photos of Wills with Queen Elizabeth and Prince Andrew, Duke of York, also shared a vintage snap from 1986.

Meghan and Harry's unceremonious birthday wishes for Prince William, especially in comparison to the rest of the royal family's, come just two days after the couple officially exited the Royal Foundation, the charity that they ran with William and his wife, Kate Middleton.

It was the second official split between the couples in the span of just a few months: This spring, Harry and Meghan moved out of Kensington Palace, where Kate and William live with their kids, and into Frogmore Cottage at Windsor Castle. They also formally separated their royal offices.

SEE ALSO: Prince Philip warned Prince Harry about marrying Meghan Markle

The official moves come after months of speculation that there's a rift between Harry and William, as well as Kate and Meghan. While the alleged tension seems to be mostly behind them, there may still be some lingering bad blood.

While royal experts say that "it's absolutely the case that the brothers did fall out" at some point amid tensions around Harry's new relationship with Meghan, sources now say that the duchesses and the brothers are bonding over parenthood and that Archie Harrison's arrival "has probably really helped to improve the relationship."

25 PHOTOS
First photos of Baby Sussex
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First photos of Baby Sussex
Britain's Prince Harry, Duke of Sussex (R), and his wife Meghan, Duchess of Sussex, pose for a photo with their newborn baby son in St George's Hall at Windsor Castle in Windsor, west of London on May 8, 2019. (Photo by Dominic Lipinski / POOL / AFP) (Photo credit should read DOMINIC LIPINSKI/AFP/Getty Images)
EMBARGOED to 1240 WEDNESDAY MAY 08 2019. The Duke and Duchess of Sussex with their baby son, who was born on Monday morning, during a photocall in St George's Hall at Windsor Castle in Berkshire.
WINDSOR, ENGLAND - MAY 08: Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex, pose with their newborn son during a photocall in St George's Hall at Windsor Castle on May 8, 2019 in Windsor, England. The Duchess of Sussex gave birth at 05:26 on Monday 06 May, 2019. (Photo by Dominic Lipinski - WPA Pool/Getty Images)
EMBARGOED to 1240 WEDNESDAY MAY 08 2019. The Duke and Duchess of Sussex with their baby son, who was born on Monday morning, during a photocall in St George's Hall at Windsor Castle in Berkshire.
EMBARGOED to 1240 WEDNESDAY MAY 08 2019. The Duke and Duchess of Sussex with their baby son, who was born on Monday morning, during a photocall in St George's Hall at Windsor Castle in Berkshire.
EMBARGOED to 1240 WEDNESDAY MAY 08 2019. The Duke and Duchess of Sussex with their baby son, who was born on Monday morning, during a photocall in St George's Hall at Windsor Castle in Berkshire.
EMBARGOED to 1240 WEDNESDAY MAY 08 2019. The Duke and Duchess of Sussex with their baby son, who was born on Monday morning, during a photocall in St George's Hall at Windsor Castle in Berkshire.
EMBARGOED to 1240 WEDNESDAY MAY 08 2019. The Duke and Duchess of Sussex with their baby son, who was born on Monday morning, during a photocall in St George's Hall at Windsor Castle in Berkshire.
Britain's Prince Harry, Duke of Sussex (R), and his wife Meghan, Duchess of Sussex, pose for a photo with their newborn baby son in St George's Hall at Windsor Castle in Windsor, west of London on May 8, 2019. (Photo by Dominic Lipinski / POOL / AFP) (Photo credit should read DOMINIC LIPINSKI/AFP/Getty Images)
Britain's Prince Harry, Duke of Sussex (R), and his wife Meghan, Duchess of Sussex, pose for a photo with their newborn baby son in St George's Hall at Windsor Castle in Windsor, west of London on May 8, 2019. (Photo by Dominic Lipinski / POOL / AFP) (Photo credit should read DOMINIC LIPINSKI/AFP/Getty Images)
Britain's Prince Harry and Meghan, Duchess of Sussex are seen with their baby son, who was born on Monday morning, during a photocall in St George's Hall at Windsor Castle, in Berkshire, Britain May 8, 2019. Dominic Lipinski/Pool via REUTERS
The Duke and Duchess of Sussex with their baby son, who was born on Monday morning, during a photocall in St George's Hall at Windsor Castle in Berkshire.
The Duke and Duchess of Sussex with their baby son, who was born on Monday morning, during a photocall in St George's Hall at Windsor Castle in Berkshire.
The Duke and Duchess of Sussex with their baby son, who was born on Monday morning, during a photocall in St George's Hall at Windsor Castle in Berkshire.
The Duke and Duchess of Sussex with their baby son, who was born on Monday morning, during a photocall in St George's Hall at Windsor Castle in Berkshire.
WINDSOR, ENGLAND - MAY 08: Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex, pose with their newborn son during a photocall in St George's Hall at Windsor Castle on May 8, 2019 in Windsor, England. The Duchess of Sussex gave birth at 05:26 on Monday 06 May, 2019. (Photo by Dominic Lipinski - WPA Pool/Getty Images)
Britain's Prince Harry, Duke of Sussex (R), and his wife Meghan, Duchess of Sussex, pose for a photo with their newborn baby son in St George's Hall at Windsor Castle in Windsor, west of London on May 8, 2019. (Photo by Dominic Lipinski / POOL / AFP) (Photo credit should read DOMINIC LIPINSKI/AFP/Getty Images)
The Duke and Duchess of Sussex with their baby son, who was born on Monday morning, during a photocall in St George's Hall at Windsor Castle in Berkshire.
The Duke and Duchess of Sussex with their baby son, who was born on Monday morning, during a photocall in St George's Hall at Windsor Castle in Berkshire.
Britain's Prince Harry, Duke of Sussex (R), and his wife Meghan, Duchess of Sussex, pose for a photo with their newborn baby son in St George's Hall at Windsor Castle in Windsor, west of London on May 8, 2019. (Photo by Dominic Lipinski / POOL / AFP) (Photo credit should read DOMINIC LIPINSKI/AFP/Getty Images)
WINDSOR, ENGLAND - MAY 08: Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex, pose with their newborn son during a photocall in St George's Hall at Windsor Castle on May 8, 2019 in Windsor, England. The Duchess of Sussex gave birth at 05:26 on Monday 06 May, 2019. (Photo by Dominic Lipinski - WPA Pool/Getty Images)
Meghan, Duchess of Sussex, places her hand on the head of her newborn baby boy as she and her husband Britain's Prince Harry, Duke of Sussex, pose for a photo in St George's Hall at Windsor Castle in Windsor, west of London on May 8, 2019. (Photo by Dominic Lipinski / POOL / AFP) (Photo credit should read DOMINIC LIPINSKI/AFP/Getty Images)
WINDSOR, ENGLAND - MAY 08: Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex, pose with their newborn son during a photocall in St George's Hall at Windsor Castle on May 8, 2019 in Windsor, England. The Duchess of Sussex gave birth at 05:26 on Monday 06 May, 2019. (Photo by Dominic Lipinski - WPA Pool/Getty Images)
Britain's Prince Harry, Duke of Sussex (L), and his wife Meghan, Duchess of Sussex, walk away after posing for photographs with their newborn baby son in St George's Hall at Windsor Castle in Windsor, west of London on May 8, 2019. (Photo by Dominic Lipinski / POOL / AFP) (Photo credit should read DOMINIC LIPINSKI/AFP/Getty Images)
The Duke and Duchess of Sussex with their baby son, who was born on Monday morning, during a photocall in St George's Hall at Windsor Castle in Berkshire.
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