Princess Theodora of Greece and her LA-based lawyer husband Matthew Kumar finally tied the knot on Saturday after a four-year delay and two attempts.They were surrounded by their friends and family during the lavish ceremony at the Metropolitan Cathedral of Athens – and for the bride, this included some very royal guests.Theodora, whose parents are the late King Constantine II of Greece and his wife Queen Anne-Marie, is the goddaughter of the late Queen Elizabeth II and has close ties to both the Danish and Spanish royal families.Several members of the latter households, including the bride’s paternal aunt Queen Sofia of Spain and her maternal aunt Princess Benedikte of Denmark, as well as the Greek Royal Family, attended the glittering occasion over the weekend.  However, while it had been speculated that members of the British Royal Family would attend, they were not spotted at the event – despite King Charles and Prince William both rumoured to have been invited to the initial occasion in 2020. Princess Theodora Of Greece and fiancé Matthew Kumar tied the knot in a lavish celebration on Saturday, pictured in their official wedding photoThe Prince of Wales was King Constantine’s godson, but he and the Princess of Wales likely remained at home after she recently completed her cancer treatment.King Charles and Queen Camilla, meanwhile, missed the nuptials as they were in Scotland on Saturday for the 25th anniversary of Parliament, while the Duke of Edinburgh was said to be at a concert for Windsor Festival in St George’s Chapel.However, in October 2021, when Theodora’s brother Prince Philippos of Greece married Nina Flohr, the daughter of a billionaire, both Princess Beatrice and Princess Eugenie were in attendance, as well as Beatrice’s husband Edoardo Mapelli Mozzi.It’s unclear why no members of the British Royal Family were pictured at the event. MailOnline has contacted Buckingham Palace for comment. Here, FEMAIL takes a closer look at the guests who attended the very royal wedding… 1. Princess Theodora Princess Theodora of Greece and Denmark (pictured) looked spectacular in an elaborate wedding dress by Greek couturier Celia KrithariotiLondon-born Princess Theodora of Greece and Denmark married American lawyer Matthew Kumar yesterday in the Metropolitan Cathedral of Athens – where her parents were married 60 years earlier. The bride, who is the daughter of the late King Constantine and Queen Anne-Marie,  looked spectacular in an elaborate wedding dress by Greek couturier Celia Kritharioti.The 41-year-old actress, who is best known for her role in US soap opera ‘The Bold and the Beautiful’, chose Athens-based Kritharioti to design her wedding dress back in 2020, according to Hello!. Her dramatic white dress had a flattering bardot neckline and a beaded bodice as well as a bustle at the back.The Princess’s ornate lace veil once belonged to Princess Margaret of Connaught (1882-1920).   It was held in place by the sparkling Khedive of Egypt tiara encrusted with diamonds, which was created by jeweller Cartier. The bride wore her hair in a soft half up, half down style and carried a sumptuous bouquet of white roses. 2. Matthew Kumar Matthew Kumar (pictured) married Princess Theodora in a lavish ceremony on Saturday, September 28The groom, Matthew Kumar, is an American lawyer who is based in Los Angeles. For his wedding, Matthew looked handsome in a dark navy morning suit with a white shirt and a pale blue tie with a polka dot pattern. Born and raised in Southern California, Matthew met Princess Theodora when she moved to Los Angeles to pursue a career in acting. They started dating in 2016, and he later proposed in 2018. They were set to marry in 2020 but had to postpone their first wedding date because of the Covid pandemic. When the pandemic finally came to an end, Theodora and Matthew set another wedding date – ‘early summer’ in 2023, in Porto Heli, Greece.However, just a month after the Greek Royal Household announced the second wedding date, actress Theodora’s father, King Constantine of Greece, passed away. The exiled king died at the age of 82 in January 2023. As Theodora mourned her father, she postponed her wedding to Matthew for the second time.The bride and groom were spotted side-by-side at the memorial service for King Constantine at St George’s Chapel in Windsor in February 2024, which saw royals from across Europe in attendance including Queen Camilla, King Felipe of Spain and Queen Letizia. 3. Queen Anne-Marie The mother of the bride, Queen Anne-Marie (pictured), looked stunning in a sky-blue gownQueen Anne-Marie is Princess Theodora’s mother and the widow of King Constantine II of Greece. She became Queen of Greece as King Constantine’s consort when they married on September 18, 1964. Nine years later the Greek monarchy was abolished. The 78-year-old Danish royal is the youngest daughter of the late Frederik IX of Denmark and the late Ingrid of Sweden. Her older sister is Queen Margrethe II of Denmark.Princess Theodora’s mother is also connected to the Spanish royals – her sister-in-law is Queen Sofía of Spain.Queen Anne-Marie looked stunning in a sky-blue gown with ruffle-detailing and a sheer skirt for her daughter’s wedding.Designed by Greek couturier Celia Kritharioti – who created Princess Theodora’s wedding dress – the elegant gown had three-quarter sleeves and a bardot neckline.She wore pale blue heels and carried a matching evening bag, accessorising her outfit with a choker of white pearls with a diamond encrusted cross pendant.4.  Crown Prince Pavlos Pavlos, Crown Prince of Greece (pictured) is Princess Theodora’s older brother Pavlos, Crown Prince of Greece, became the head of the Royal House of Greece when his father King Constantine II passed away on January 10, 2023.The 57-year-old is the eldest child of King Constantine II and Queen Anne-Marie.As Princess Theodora’s older brother, he accompanied her into the Metropolitan Cathedral of Athens, with the siblings walking arm in arm. Pavlos is married to American heiress Marie-Chantal Miller, who runs a children’s clothing line, and the couple share five children. They split their time between the UK, the US and Greece. Princess Theodora’s brother wore a navy and pinstripe morning suit with a sky-blue waistcoat underneath, adding a crisp white shirt and a dark red tie.5. Marie-Chantal, Crown Princess of Greece Princess Marie-Chantal with her four sons before the wedding of Princess Theodora of GreeceMarie Chantal of Greece has lived a modern-day fairytale, from growing up with billionaire father Robert Miller to falling ‘in love at first sight’ with Prince Pavlos, heir to the Greek crown. She combines work as a clothes designer with a life as mother-of-five whose children are already forging their own successful paths. She also has a huge online following, with nearly a quarter of a million fans on one social media channel alone.Born in London on September 17, 1968, to parents Robert W Miller and his Ecuador-born wife Maria Clara Pesantas, she was brought up in Hong Kong until the age of nine, where she then went to boarding school in Switzerland. Her father Robert initially made a fortune as a pioneer in the world of duty free shopping, establishing the DFS or Duty Free Shopping chain.Later, he established an investment business that made him and his family even more money.Marie-Chantal has a long history of associating with the rich and famous; before she married into the royal family, the London-born blonde worked for Andy Warhol.She began a degree in History of Art at New York University in 1993, and it was in the city that she met Prince Pavlos for the first time.The couple met on a blind date set up by New York investment banker Alecko Papamarkou, a mutual friend who was convinced they would hit it off.’We clicked,’ the Princess told Vanity Fair in 2008. ‘It was love at first sight. I knew that he was the person I would marry.’The pair became engaged in 1995 after a romantic proposal in the Swiss ski resort of Gstaad, and their July wedding later that year was the largest gathering of royals in London since Queen Elizabeth’s wedding to Prince Philip in 1946.Among the 1,250 guests who attended were the royal families of Britain, Spain, Sweden, Belgium, Romania, Jordan and Bulgaria.The couple moved to Manhattan, where she continued her studies in art history and Pavlos worked as an investment consultant. It was here they had their firstborn Olympia, before moving to London in 2002 so their children could have a European education. The couple now have five children.In 2000, she launched her luxury children’s wear brand Marie-Chantal, which has since gone on to amass celebrity and royal fans, including Kate Middleton. The Greek royals have lived between New York and London since 2004, with Marie Chantal running a children’s clothing line out of the UK.6. Queen Sofia of Spain Queen Sofia (pictured), 85, looked striking in a shocking pink outfit by Spanish designer Alejandro de MiguelQueen Sofia of Spain, sister of the late King Constantine II, is sister-in-law of Queen Anne-Marie of Greece. She was the Queen of Spain until her husband Juan Carlos I abdicated in 2014. Their only son, Felipe VI, is the current King of Spain and is married to Queen Letizia. Queen Sofia, 85, looked striking in a shocking pink outfit by Spanish designer Alejandro de Miguel.Her elegant, floor-length skirt was pleated while het top was embellished with a diamante trim and a beautiful bow-shaped brooch. 7. Princess Irene of Greece Princess Irene of Greece was snapped attending the pre-wedding dinner party of Princess Theodora of Greece to Matthew Kumar in AthensWhile she generally prefers to keep a low profile, Princess Irene of Greece and Denmark was snapped attending the pre-wedding dinner party at the Byzantine and Christian Museum.The 82-year-old has some impressive royal ties, as the younger sister of Queen Sofía of Spain and the late former King Constantine II of Greece.Though she now lives in Madrid, with her nephew King Felipe VI of Spain and his wife, Queen Letizia, the royal made a rare appearance to attend Princess Theodora and Matthew Kumar’s big day.8. Princess Benedikte of Denmark  80-year-old Princess Benedikte of Denmark looked chic in a red frock as she attended the nuptial doPrincess Benedikte of Denmark was also among the glamorous guests at the nuptial do in Athens.The 80-year-old royal is the second daughter and child of King Frederik IX and Queen Ingrid of Denmark.As the younger sister of Queen Margrethe II of Denmark, who abdicated in January, the current King of Denmark, Frederik X is her nephew.Mother-of-three Benedikte, who was wed to the late Richard, 6th Prince of Sayn-Wittgenstein-Berleburg, appears regularly at events representing the Danish monarch.9. Infanta Elena of Spain Infanta Elena de Borbon and Queen Sofia arrive at the Cathedral on SaturdayInfanta Elena of Spain – who also holds the title Duchess of Lugo – has managed to keep a relatively low profile, despite being the sister of the King.Elena shares her daughter Victoria de Marichalar y Borbón and son Felipe with her ex-husband Jaime de Marichalar.The couple married in 1995 before divorcing in 2009. At the time, the pair issued a statement saying they ‘maintain a fluid dialogue on all matters relating to the common interest of their children’.10. Infanta Cristina of Spain  Infanta Cristina of Spain, 59, the sister of King Felipe of Spain, attended the nuptials along with several of her close family, including her sister, Infanta Elena. Pictured, on Friday at the pre-wedding dinnerInfanta Cristina of Spain, 59, the sister of King Felipe of Spain, attended the nuptials along with several of her close family, including her sister, Infanta Elena.Christina is the daughter of King Juan Carlos I and Queen Sofia – previously part of the Greek royal family and the sister of Constantine II of Greece- and is sixth in line to the Spanish throne.11. Princess Maria-Olympia of Greece  Princess Maria-Olympia (right) was a bridesmaid at the wedding of Princess Theodora and Matthew KumarThe New York City-born fashion model and socialite Princess Maria-Olympia was a bridesmaid for Princess Theodora and Matthew Kumar.She is the oldest child and only daughter of Pavlos, Crown Prince of Greece, and his wife Marie-Chantal.The 28-year-old goddaughter of King Charles has walked the runway for high-end designers such as Dolce & Gabbana. Princess Marie-Olympia’s bridesmaid dress was also created by Greek couturier Celia Kritharioti, who was responsible for Princess Theodora’s wedding dress.The elegant design featured a slim, floor-length skirt and a draped top with short sleeves.  The Princess accessorised the gown with a silver cuff and a pair of diamond earrings.  12. Princess Nina of Greece  Thomas Flohr, Prince Philippos, Princess Nina pictured at the wedding on SaturdayPrincess Nina of Greece is wife of Prince Philippos of Greece, who is the brother of the bride, Theodora.Nina is the daughter of Thomas Flohr, who founded the airline company VistaJet in the early 2000s, and Katharina Flohr who is a founding editor of Russian Vogue.She and her husband, Philippos, were also in attendance at the wedding of Princess Eugenie and Jack BrooksbankNina donned a glamorous baby blue frock pulled in to one side, creating a chic scrunched effect at the waist.She wore matching baby blue heels, a white clutch bag and slicked down her brunette tresses in a low bun.13. Prince Philippos of Greece Nina’s husband, Prince Philippos of Greece, 38, is the younger brother of the bride, Theodora.He wore a three piece suit with a waistcoat in the same shade as his wife’s pale blue frock and finished the ensemble with a cornflower blue tie.14. Prince Nikolaos Prince Nikolaos, 54, is another of the four siblings of Princess Theodora in attendance of the lavish ceremony.He sported a three piece suit in marl grey with a navy lining for the wedding of his younger sister. The prince offered a splash colour to the ensemble with a forest green tie.15. Prince Achileas-Andreas Prince Achileas-Andreas is the son of Pavlos, Crown Prince of Greece and Marie-Chantal of Greece, therefore the nephew of the bride.Achileas, 24, who is now an actor and socialite, previously had guests appearances on the show, The Bold and the Beautiful, which starred his aunt Theodora was one a star in.The New York born socialite wore a three piece suit including an indigo blue waistcoat, pale blue tie and smart black blazer.16. Juan Urdangarin Juan Urdangarin is one of the four children that Infanta Cristina of Spain shared with the former handball player, Iñaki Urdangarin.The 25-year-old – who is also the grandson of Queen Sofia – wore a navy blue suit with smart black brogues and a forest green tie.