“ The Devil Wears Prada 2 ” has no shortage of head-turning fashion.

In this sequel, Andy (Anne Hathaway) and Miranda (Meryl Streep) encounter a series of crises that set the stage for a larger, existential catastrophe.

If Prada 2 makes you pine for the era of its 2006 forerunner, that may be partly because the film itself, with its acid wit and unabashed love of luxury and glamour, feels like the product of an earli...