On it was the actress Greta Lee, who was trying on a satin gown the same color as the flesh of a banana. “This dress cannot puddle,” Mrs. Goldberg, 40, said, squinting her eyes as she focused on a slight break at the bottom of the custom Loewe piece. (Ms. Lee is an ambassador for the brand.) “What it’s doing right now,” Mrs. Goldberg said of the dress onscreen, “it can’t do that. It has to be perfect.” Nanaz Hatami, a tailor Mrs. Goldberg has worked with for five years, who was with Ms. Lee, sprang into action.

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Persons: Danielle Goldberg, Greta Lee, Mrs, Goldberg, Lee, Nanaz, Ayo Edebiri, Olivia Rodrigo Organizations: Globe Locations: New York, Los Angeles