Sure, we love a swank rooftop soirée — but (with apologies to our neighbors) the all-night rooftop rager is especially dear to our hearts — like one of AGG's most memorable birthday parties:

"We ordered sushi by the dozen, brought up a few bottles of champagne, cranked an old-school boombox, and stayed through the night. It's a great way to feel like you're escaping the oppressive NYC heat, and always makes an event maximally festive."

The trick to staying cool on those sticky summer nights? Easy pieces that look as effortlessly cool as they feel. A breezy top and cutoffs are a must — we love GUESS' cheeky, star-spangled version. And remember, it's summer — footwear is optional...a wine tote is not.

GUESS Square Plastic Logo-Temple Sunglasses, $72, available at GUESS; GUESS Americana Cut-Off Denim Shorts, $89, available at GUESS; Acne Scallop Sleeveless Shirt, $230, available at La Garçonne; Orly Genger by Jaclyn Mayer Roxbury Necklace, $260, available at Need Supply; Dooney & Bourke Alto Wine Bottle Picnic Tote, $295, available at Dooney & Bourke; Givenchy Hydra Sparkling Magic Lip & Cheek Balm, $31, available at Sephora.