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Beatrice Borromeo and Pierre Casiraghi attended Convivio 2016 photocall in Milan, Italy, June 7, 2016. Getty Images

Prince Pierre Casiraghi and his wife Beatrice Borromeo were blessed Tuesday with their first child, a baby boy, at the Princess Grace Hospital in Monaco. The nephew of Monaco's Prince Albert, Casiraghi, is currently seventh in line to the throne. His wife, Borromeo, 31, is an Italian journalist.

Reports of the birth were first indicated in an Instagram post by Beatrice Borromeo's sister, Matilde Borromeo. The post included a picturesque view from the hospital's maternity ward. She wrote in the post "28/2/2017 new date to add to the calendar in my family," and then added several blue heart emojis.

The newborn would be eighth in line to the throne after his father. Andrea Casiraghi, the elder brother of Pierre Casiraghi and the oldest child of Princess Caroline, would be in line to the throne before Pierre Casiraghi takes over. Andrea Casiraghi and his wife, Tatiana Casiraghi, have two children, a 4-year-old son named Sacha and a 2-year-old daughter, India. Princess Caroline's second child and daughter, Charlotte Casiraghi, has a 3-year-old son named Raphael.

Pierre Casiraghi and Beatrice Borromeo married lavishly in July 2015 in what was reportedly called the royal highlight in the summer of 2015. The two met in college and had been in a relationship since 2008. Their child will be the fourth grandchild for Princess Caroline and would have been a great-grandchild to the late Princess Grace, Vogue reported.

Prince Albert told People in January that his sister Princess Caroline was looking forward to the birth of one of her grandchildren. "She’s a very good mother, and probably an even better grandmother now if that’s possible," Albert said. "She really raised her kids well. Without a father for many years, that’s important. I’m incredibly proud of her children and to have them turn out as they have — that’s a tribute to her."

Beatrice Borromeo's pregnancy rumors initially started after her appearance at the Copa del Rey Mapfre Sailing Club awards ceremony in Spain in August 2016, where she was seen having a small bump. The news of pregnancy came only a few months after the couple's royal wedding, which was spread across two countries. The wedding started in Monaco where Beatrice Borromeo was seen wearing a light pink Valentino dress and ended on the northern coast of Italy with the bride wearing a flowy and feminine white Alberta Ferretti dress and a flower crown.

The name of the royal child has not been revealed yet. Beatrice Borromeo's first expected post-baby appearance would be later this month at Monaco's annual Bal de la Rose, a lavish royal ball, according to People.