Every week, one of our photographer colleagues goes to a party for a regular feature in the Sunday Style section called The Scene. This week, photojournalist Kate Warren checked out the unveiling of Nanette Lepore’s holiday collection at the Childhelp fundraiser (at Saks Tysons Galleria in McLean) with fashion experts and celebrities. Want to invite a photographer to your party? Email them at thescene@washpost.com.