Because Dutch law was changed in 1983 to include `` oldest daughters of the King '' , Catharina-Amalia , the next Princess of Orange may become the first Dutch Princess of Orange in her own right once her father , Prince Willem-Alexander , becomes King of the Netherlands . Catharina-Amalia , Hereditary Princess of Orange may become the first Dutch Princess of Orange in her own right once her father , Prince Willem-Alexander , is inaugurated King of the Netherlands .