LATE LADIES: There was a scramble for front-row seats at Yves Saint Laurent Thursday night. First Claudia Schiffer snuck in at lights-down, followed by Catherine Deneuve just as the music began, and later Emily Mortimer, who had to stand at the back. “We were so busy scoffing champagne in backstage we didn’t realize,” she confessed. The actress wrapped a Martin Scorsese movie this summer plus “City Island” alongside Andy Garcia and is next shooting “Harry Brown” featuring Michael Caine, where she plays a policewoman. “It’s set in a housing estate in England, where there’s this vigilante old man. It’s kind of a Western and I’m the Tommy Lee Jones character,” she said. Mortimer’s actor husband Alessandro Nivola has just begun playing Boy Capel to Audrey Tatou’s Gabrielle Chanel in the upcoming film “Coco Avant Chanel.” “He [Capel] hung around with French aristocratic girls and spoke really good French, so it’s a bit of a challenge,” he said. Actor and director Guillaume Canet said he’s starting shooting his next movie, “Last Night” a love story, alongside Keira Knightley and Eva Mendes, in New York in two weeks. The supermodels gathered across the way, meanwhile, including Stephanie Seymour, Claudia Schiffer and Naomi Campbell, whose hands were covered in diamond rings, one a giant curly snake. “They’re my rings from my personal collection and I don’t talk about my private life,” she said, before knocking her purse to the floor, spilling its contents. Seymour, who will be traveling to Asia next month to promote her Dior skin care campaign, said she was checked in at Azzedine Alaia. “I love to stay there and watch him work, it’s like a family,” she said.