India, July 25 -- If there was any doubt regarding the power of celebrity endorsement, Sydney Sweeney has dispelled that twice this year. First time was when she managed to get a company to sell her bathwater as soap (and boy did the product fly off the shelves). This time around, it was more conventional. The young actor came on board as an ambassador for American Eagle, an apparel brand, as they launched their new line of denim. The result was a stock market rally so insane that American Eagle became a $2-billion company overnight.

On Wednesday, American Eagle announced that they had roped in Euphoria star Sydney Sweeney for its fall campaign. Titled "Sydney Sweeney Has Great Jeans," the push is not just cheeky wordplay. It marked the ...