Britain's Prince William's girlfriend Kate Middleton is very "sophisticated and elegant," according to hotel heiress Paris Hilton.

Paris met William, his brother Prince Harry and their respective girlfriends Kate and Chelsy Davy the last time she was in the U.K., and admits she was envious of the 27-year-old beauty's effortless sense of style.

The U.K.'s Princes William and Harry are setting up their own private office. William, 26, and Harry, 24, will have headquarters in London's St James's Palace, where their father Prince Charles held official offices until 2002.

The move represents an important step for William, 26, and Harry, 24, as it gives them more autonomy from the Prince of Wales. The princes' new venture was recently approved by Queen Elizabeth and is expected to be officially announced this week.

Chelsy Davy, the girlfriend of Britain's Prince Harry, is reportedly set to quit the U.K. The Zimbabwean-born beauty - who has been dating the royal for about four-and-a-half years - is currently studying law at Leeds University in north England, but is said to be homesick and desperate to move back to South Africa.

Chelsy is making plans to leave Britain when she completes her degree next year. The revelation has come as a surprise to the 24-year-old prince, who is about to start training to become a pilot with the Army Air Corps.

Britain's Prince Harry is to train as an Army pilot after passing the unit's selection process. The 24-year-old royal - who is a tank commander with the Blues and Royals regiment - will begin training next month after completing a course to test whether he had the required talent and ability to fly.

The prince will now complete a 16-month training process, after which he will be eligible to pilot one of three helicopters - a Gazelle, Lynx or Apache.

Chelsy Davy is completing work experience at Britain's Queen Elizabeth's solicitors. The Zimbabwean-born girlfriend of Prince Harry - the queen's grandson - had her first day at Farrer and Co. Monday and sources believe the Leeds university student's royal connections helped her land the prestigious placement.

A source told Britain's The Daily Mail newspaper: "These London City law firms only ever interview Oxbridge graduates and, normally speaking, someone at Leeds would not get a look in."

The 24-year-old prince began a month-long assessment course in order to fulfill his dream of becoming a fighter pilot Tuesday - but knows he has a tough challenge ahead, with the grueling "Grading" procedure having a failure rate of more than 50 per cent.

One insider at the Army Air Corps' base in Middle Wallop, Wiltshire said: "The Grading process is used to weed out those who do not possess the natural qualities needed to become a helicopter pilot."