The Sydney Sweeney ad campaign got a thumbs-up from President Trump, while the company also announced a new collaboration with Travis Kelce.Shares of American Eagle Outfitters (AEO 0.11%) rallied 19.8% in August, according to data from S&P Global Market Intelligence.American Eagle capitalized on July's optimism regarding its new ad campaign starring actress Sydney Sweeney when President Trump endorsed the company's campaign in early August. Then later in the month, American Eagle announced a collaboration w ...