CIAO PARIGI: Lorenzo Serafini is gaining a toehold in Paris. The Italian designer was in town on Sunday night to celebrate his summer pop-up at Café de l’Esplanade with pal Chiara Ferragni, who sported a daring diamanté chain bra top.
Serafini said he followed the restaurant’s cofounder, Isabelle Saglio, on Instagram without realizing she was the mother of stylist Géraldine Saglio, who used to work on his shows. “And then at one…