Kate Middleton is reportedly in the midst of a royal makeover, and last night, the rumor seemed to gain even more traction when the Duchess of Cambridge left Princes George and William at home and stepped out for her first official engagement of 2014 in a blue Jenny Packham dress—accented with a showstopping diamond-drop statement necklace on loan from the Queen—to attend a gala at the National Portrait Gallery in London last night.