Here’s a no-brainer style hack for all you fashion folks: Each week, some of the best shops in NYC host free in-store events such as trunk shows, previews and guest speakers. And guess what? You’re always invited! We’ll fill you in on the coolest things to do in Gotham’s retail scene, so you can snag complimentary glasses of champagne, markdowns and goody bags while upgrading your wardrobe. Also be sure to check out some of the best sample sales in NYC this week.