Talk about a holiday soirée! Lady Gaga and Tony Bennett provide the entertainment for a super swanky party, for guests including Joan Smalls, Sasha Pivovarova and more beautiful people, all dressed up in their H&M best. Featuring fur, sequins, beading and lace (plus, you know, a full swing band and dancers), H&M’s Magical Holidays campaign is quite extravagant and all kinds of glamorous—I mean, did you see that wig?! All holiday party hosts: take note. This is the bash to beat.