Alexandra, who turned 50 on October 3, partied the night away in Los Angeles on Saturday at the bash thrown by her husband, conceptual designer Dax Miller, 51.
Queen Margrethe, 82, has removed princely titles from four of her eight grandchildren - prompting a bitter royal row with her family redolent of when the Duke and Duchess of Sussex quit the UK.
Queen Margrethe, 82, has stripped four of her eight grandchildren of their princely titles, saying it is for their own good - prompting an unseemly royal row redolent of Megxit.