• DUCHESS CATHERINE  photo | Kate Middleton

Credit: Max Mumby/Indigo/Getty

Published: Wednesday September 18, 2013 07:00 AM EDT

2013

DUCHESS CATHERINE

Good luck concentrating on anything else for the rest of the day. You'll be too busy staring, slack-jawed, at this photo of the royal mum looking like a complete knockout in a sequin Jenny Packham gown at the Tusk Conservation Awards in London.