Giorgio Armani ran with the season’s trends, showering his classic jackets with sequins, and conjuring dresses as light as puffs of smoke. The invitation to the show, with its gold-embossed bamboo poles, was a giveaway: this collection was all about sunny climes — and languid luxury. Armani’s ladies could have been strolling by the sea in Phuket or touring a temple in Goa swathed in gossamer shawls, sarong styles or long, billowy shirts layered over loose trousers that gathered around the ankle.