The shoes of Catherine, the Duchess of Cambridge, are seen during a visit with her husband Britain's Prince William, to Narrow Neck Lookout to observe abseiling by the Mountain Youth Services group in the Blue Mountains town of Katoomba, west of Sydney April 17, 2014. Britain's Prince William and his wife Kate are undertaking a 19-day official visit to New Zealand and Australia with their son George. REUTERS/Ryan Pierse/Pool (AUSTRALIA - Tags: ROYALS SOCIETY)