The Jane Ballroom was stocked with flighty guests Sunday: Live monarch butterflies flew free around an Edun fashion line and Ryan McGinley bash celebrating their “Beautiful Rebels” campaign. The critters were supposed to be in cages but kept escaping. “They were flying around the room and sitting on people,” said a spy. Jefferson Hack, whose Web site Nowness also planned the bash, was spotted corralling the beauteous bugs before they could land in cocktails cradled by guests including Jeff Koons and Courtney Love. Another ethereal Fashion Week fete was thrown Sunday by Ennio Capasa for Tim Hailand‘s photo book “One Day in the Life of Robert Wilson’s ‘The Life and Death of Marina Abramovic.’” It was at a 9,000-square-foot, West Village townhouse, up for rent at $75,000 a month and turned into an exhibition space with installations and bars. Heads were turned by Terence Koh’s full-on furry cocoon outfit, with one fashionista remarking, “You cannot go wrong with white monkey fur.”