Say "Bye, Bye, Bye" to all the other Halloween competition! Justin Timberlake and Jessica Biel totally won the holiday contest with their *NSYNC-inspired costumes at the 2019 Casamigos Halloween Party. The actress channeled her husband's style from his boy band days, rocking a metallic jumpsuit with sunglasses and a curly-haired wig. Meanwhile, Justin hilariously attended as her microphone! The lovebirds were joined by four male friends, who dressed up as the other members of the iconic pop group