“Careful!” Gwyneth Paltrow called to her daughter, Apple Martin, who was walking in black Gucci heels down a stone path on the family’s property in Amagansett, N.Y. It was a muggy, overcast Saturday night, and nearby, the actress Blythe Danner, Ms. Paltrow’s mother, mingled as guests arrived for the tented, 46-person dinner near the trampoline and treehouse in the manicured yard. The stylist Rachel Zoe said she was just focused on being on time as she was getting ready: “Gwyneth is very punctual, and if she is like, sitting at 7, it is 7, maybe even 6:59.”The dinner was hosted by Ms. Paltrow and her stylist, Elizabeth Saltzman, and the occasion was the release of a new Goop serum and a Gucci summer collection. Attendees included Jimmy Fallon, Jodie Comer, Cleo Wade, Jerry and Jessica Seinfeld, and Dr. Julius Few, a plastic surgeon who worked on the new product.

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Persons: Gwyneth Paltrow, Apple Martin, Gucci, Blythe Danner, Ms, Paltrow’s, Rachel Zoe, Gwyneth, Paltrow, Elizabeth Saltzman, Jimmy Fallon, Jodie Comer, Cleo Wade, Jerry, Jessica Seinfeld, Julius Few Locations: Amagansett, N.Y