Holiday parties and festive dresses typically go hand in hand, but this year I've been enjoying some more casual jean-friendly soirees, including an alfresco dinner party I hosted last week with my sister and Gwyneth Paltrow. See pics . The party trick is to dress up the denim, of course, which I did with a pair of Chanel slingbacks and an old embellished H&M sweater. I'd like to stay on this party train with more holly, jolly denim-enhancing pieces from , , , , , and .