Prince Harry turned 30 Monday and confessed that he is “slowly starting to feel old.” “I think 30 is one of those first milestones when you drive through a village and see the 30 mile per hour sign," he told ITV News last week. "It's that constant reminder going 'I am actually quite old.'" But Harry was quick to note, “I’m always young at heart.”

While he has had two serious girlfriends over the years, Chelsy Davy and Cresssida Bonas, Harry is currently single. He reportedly planned to celebrate turning the big 3-0 with a birthday party, but cancelled it once his sister-in-law, Kate Middleton, fell ill with morning sickness while pregnant with her second child. “Kate had been very involved in organizing Harry’s party, and once she fell ill he felt it wrong to let the event go ahead,” a source told Mirror. But “he has promised his friends he will organize a post-30th birthday party when the time is right,” the source continued.

In light of his birthday, here is a look at Prince Harry over the years.

Prince Harry Prince William makes a royal salute as he watches the scene of Trooping the Colour from the balcony of Buckingham Palace with his brother Harry and mother Princess Diana on June 15, 1985 in London. Photo: Reuters

Prince Harry Britain's Prince William (L) and Prince Harry wave from the deck of the Royal Yacht Britannia after arriving aboard on the Toronto waterfront on October 22, 1991. Photo: Reuters Prince Harry Prince Harry, the son of [Britain's Prince and Princess of Wales], sits in a British tank July 29, 1993, during his first royal duty. [Princess Diana] and Prince Harry were visiting the Light Dragoons at Haig barracks in Bergen-Hohne Photo: Reuters Prince Harry Princess of Wales and Prince Harry leave the Royal Tournament at Earls Court, July 1994. Photo: Reuters Prince Harry The children of the Prince of Wales and the Duchess of York, William, Beatrice, Eugenie and Harry (from right) pose for photographers in Klosters on Jan. 4, 1995, prior a joint ski practice Photo: Reuters Prince Harry Prince Charles gives directions to Prince Harry while on a day out tobogganing in Klosters, January 5, 1997. Prince Harry and his father Prince Charles currently spending a winter holiday in the Swiss mountain region of the Grisons. Photo: Reuters Prince Harry Prince Charles touches the shoulder of his son Harry as his other son Prince William watches the hearse bearing his mother Diana, Princess of Wales, being driven from Westminster Abbey following her funeral service Sept. 6, 1997. Millions of mourners lined the route to pay their respects. Photo: Reuters Prince Harry Britain's Prince Charles (C) looks on as his sons Prince William (L) and Harry (R) accept gifts of Roots clothing as worn by the Canadian Olympic Team, March 24, 1998. Photo: Reuters Prince Harry Prince Harry, Prince Charles, the Prince of Wales (C) and Prince William (L) pose for pictures during Prince Harry's confirmaion at Eton, March 19, 2000. Photo: Reuters Prince Harry Britain's Prince Harry (L) is tackled for the ball during the annual St Andrew's Day Eton Wall Game by unidentified students at Eton College in Berkshire November 24, 2001. Photo: Reuters Prince Harry Britain's Prince Charles and his sons Prince William (R) and Prince Harry pose during an official photo call in Monbiel outside Klosters March 29, 2002. Photo: Reuters Prince Harry Britain's Prince Harry, the younger son of the Prince of Wales, rehearsing for a tattoo at Eton College, Windsor where he was the Parade Commander, May 12, 2003. Photo: Reuters Prince Harry Britain's Prince Harry prepares to plant a fruit tree with four-year-old Mutsu in the grounds of the Mants'Ase children's home near Mahles Hoek in Lesotho March 3, 2004. Photo: Reuters Prince Harry Britain's princes William and Harry arrive for civil wedding ceremony of Prince Charles and Camilla Parker Bowles in Windsor April 9, 2005. Photo: Reuters Prince Harry Britain's Prince Harry is seen in his final training exercise, Exercise Threshold, in Cyprus, March 2006 in this handout picture released by Ministry of Defence. Photo: Reuters Prince Harry Britain's Princes William (L) and Harry speak on stage at Wembley Stadium in London at the "Concert for Diana", held in memory of their mother Princess Diana, July 1, 2007. Photo: Reuters Prince Harry Britain's Prince Harry (2nd L) sits with a group of Gurkha soldiers after firing a machine gun from the observation post on JTAC Hill, close to FOB Delhi (forward operating base), in Helmand province Southern Afghanistan January 2, 2008. Photo: Reuters Prince Harry Britain's Prince Harry smiles as he helps plant a tree during an official naming of the British Garden at Hanover Square in New York, May 29, 2009. Photo: Reuters Prince Harry Britain's Prince Harry (2nd L) smiles as he poses for a group photograph after receiving his wings from his father, Prince Charles, at the Army Aviation Centre at Middle Wallop, southern England May 7, 2010. Photo: Reuters Prince Harry Britain's Prince William (L) and his wife Catherine, Duchess of Cambridge and Prince Harry (R) leave the VIP marquee during a military awards ceremony, A Night of Heroes, at the Imperial War Museum in central London December 19, 2011. Photo: Reuters Prince Harry Britain's Prince Harry runs away from Olympic gold medalist Usain Bolt during a visit to the Usain Bolt track at the University of the West Indies in Kingston, Jamaica March 6, 2012. Photo: Reuters Prince Harry Britain's Prince Harry salutes at the opening ceremony of the Warrior Games at the U.S. Olympic Training Center in Colorado Springs, Colorado May 11, 2013. Photo: Reuters Prince Harry Britain's Queen Elizabeth, Prince Philip, Prince Harry, Catherine, the Duchess of Cambridge, and Prince William, the Duke of Cambridge, watch a flyover from the balcony of Buckingham Palace in the annual Trooping the Color ceremony, June 14, 2014. Photo: Reuters Prince Harry (L-R) Britain's Prince William, Camilla, Duchess of Cornwall, Prince Charles and Prince Harry attend the Opening Ceremony of the Invictus Games at the Queen Elizabeth Olympic Park in London, September 10, 2014. Photo: Reuters