Keira Knightley was in great spirits at the premiere of Laggies, despite getting caught up in a Wizard of Oz–level wind. Chanel’s Coco Mademoiselle advert star donned ethereal diamond and pearl styles from the brand’s fine jewelry line, including the aptly named Milky Way ring. Meanwhile, Naomi Watts continued her well-documented love affair with Bulgari (she was spotted at three Toronto film fest events in Bulgari designs!): While celebrating her film St. Vincent, she selected a Serpenti necklace and Diva fan-motif earrings—proving the Deco trend is certainly here to stay.  Knightley's Original1932 collection Voie lactée ring in 18k white gold with 45 brilliant-cut diamonds and six Japanese cultured pearls; price on request; Chanel, NYC; 800-550-0005; chanel.comUnder $15,000Ring in 18k white gold with 1.24 cts. t.w. diamonds and 10 mm–13 mm Australian South Sea pear