PARIS (AP) — Demi Moore and Cynthia Erivo were among celebrities who took their seats in a sweltering university courtyard for the most anticipated show of Paris couture week: Designer Pierpaolo Piccioli’s debut for Balenciaga.In his first Balenciaga couture show — and the fashion house’s biggest statement since it revived its haute couture line in 2020 — Piccioli sent out ballooning gowns and hooded feather cocoons on Wednesday, then closed with model Gigi Hadid engulfed in rooster feathers. For his bow, he walked out flanked by his entire atelier in white coats, to a standing ovation.The debut capped a four-day season ending Thursday that came down to three things: flesh, fantasy and the machine. Across 30 houses, five showing for the first time, designers bared the body and made it vanish, fled into make-believe as a heat wave gripped the city, and reached for particle accelerators and lab-grown silk while insisting couture still belongs to the human hand. Couture — handmade, made-to-measure clothing that can cost as much as a house and reaches only a few hundred clients worldwide — is the industry’s laboratory and its loudest advertisement, a halo for the perfumes, handbags and ready-to-wear that pay the bills.