Prince William and Princess Kate have extended their best wishes to Great Britain's Paralympians as the Paralympic Games commence in Paris. The royal couple expressed their excitement for 'another few weeks of incredible sport' while wishing the athletes the best of luck via messages on social media. Wheelchair tennis player Lucy Shuker and wheelchair basketball athlete Terry Bywater will be flag bearers for ParalympicsGB. Team GB aims to surpass their previous tally of 124 medals from Tokyo. The messages from the royals come amid the re-release of Prince Harry's memoir 'Spare' in paperback. Princess Kate continues to undergo chemotherapy but has been seen more frequently in public, including at recent events like Wimbledon.