Grace Gummer delivered a standout portrayal of JFK JR.'s sister, Caroline Kennedy, in Love Story . Clearly, trophy-worthy performances run in the family: Meryl Streep is her mom. She also acquired Streep's affinity for fashion storytelling. On April 29, Gummer sampled the cerulean blue color trend made famous by her mom's monologue in The Devil Wears Prada . As Love Story began making its case for Emmy Award nominations at Wednesday's "For Your Consideration" event, it also brought the show's cast back to the red carpet—right where Gummer belongs. Stylist Nicky Campbell traded the actress's previous '90s minimalism looks for a cerulean Colleen Allen set. Grace Gummer's matching set would make her pro-cerulean blue mom proud. (Image credit: Getty Images) On top, she wore nothing but an elongated, carpet-grazing coat, featuring a funnel neck and cascading hook-and-eye closures. Then, matching trousers emerged from beneath the jacket's waist-high slit.…