Catherine, Duchess of Cambridge, is leaving personal comments on Instagram for entries to her COVID-19 photography project called "Hold Still."The duchess is signing off on the comments with a "C," for her first name."Hold Still," in partnership with the National Portrait Gallery, intends to capture in photographs the United Kingdom amid this unprecedented global health crisis.Catherine, Duchess of Cambridge, is getting more hands-on with the official royal social media accounts.After launching her photography initiative, "Hold Still," in early May, the Duchess of Cambridge is now commenting on the entries for the project, which aims to capture the mood of the United Kingdom brought on by the unprecedented global health crisis.The.