On September 6, Taylor Swift, the most famous “WAG” in the world, strutted into Arrowhead Stadium wearing a Versace denim corset and Grlfrnd denim shorts. This was “very good for Gen Z’s No. 1 selling jeans brand,” said Craig Brommers, American Eagle’s CMO, citing NPD DecisionKey. American Eagle seized the moment by posting a similar look from its own collection.