Princess Charlene is keeping a low profile on Prince Albert of Monaco’s birthday after quashing marriage rumours. The Prince of Monaco is celebrating his 66th birthday today. Prince Albert married Charlene, 46, in 2011 at the Prince’s Palace of Monaco. The couple have faced several rumours regarding their marriage in the past. In 2020, the princess contracted an ear, nose and throat infection and remained in South Africa where she was receiving treatment. She did not return to Monaco until October 2021, sparking many rumours about a potential split with Prince Albert. In addition, Princess Cha…