What is the title for the daughter of a prince?

In the United Kingdom, the daughter of a prince is either the granddaughter of a sovereign, or a great-granddaughter of a sovereign. A granddaughter of a sovereign who is the daughter of a prince usually enjoys the rank and style of princess affixed to her first name. Examples are the Queen's granddaughters, Princess Beatrice of York and Princess Eugenie of York, daughters of Prince Andrew, the Duke of York. A great-granddaughter of a sovereign who is the daughter of a prince usually enjoys the rank and style of lady, affixed to her first name. The great-granddaughters of King George V are daughters of Princes, but they were styled Lady Helen Windsor; Lady Davina Windsor; Lady Rose Windsor and Lady Gabriella Windsor.