What better way to celebrate four decades than with a touch of sugar and a killer guestlist, right? That’s the route LeSportsac took when toasting their 40th anniversary, with some help from Teen Vogue, at their Madison Avenue flagship location on Thursday. Guests were greeted with trays of tiny desserts, candy-colored popcorn, and champagne cocktails infused with fruit to kick off the first sugar rush of the evening. But that wasn’t the extent of the goodies: the crowd was kept rather busy with a chic photobooth and a DIY personalization station where pouches and bags were just waiting to be studded and monogramed. Among the chic party revelers, Teen Vogue’s Jane Keltner de Valle, and publisher Jason Wagenheim mingled with the likes of jewelry designer Jennifer Meyer, Carson Meyer, Paper mag’s Mickey Boardman, Sailor Brinkley-Cook, and Nikki Reed. Speaking of sweet treats, what is Brinkley-Cook’s go-to sweet kick? “I like a really good chocolate cake, but it has to be vegan and gluten free, so I make it myself!” How sweet.