<div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>A US fashion brand's stock has soared after the company announced an advertising campaign with actress Sydney Sweeney.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>American Eagle's stock jumped 12 per cent after the company announced the </span><em><span>Euphoria</span></em><span> actress would be featured in their new campaign.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>The surge in stock added nearly $US228 million ($346 million) to its market capitalisation.</span></div></div><div><div id="adspot-mobile-medium"></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><strong><span>READ MORE:</span></strong><span> </span><a href="https://www.9news.com.au/world/australian-man-found-dead-in-thailand-hotel-reports/fef47132-a214-4e7f-badb-4f73571cd279" target="_blank"><strong><span>Australian tourist found dead in Thailand hotel</span></strong></a></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Company shares closed more than 4 per cent higher. Financial analysts called the share price jump "untethered from reality."</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>The brand's shares were down almost 50 per cent this year, prior to this week's pandemonium over the shares.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Sweeney will have her own jeans called "The Sydney Jean" as part of the brand's winter denim line, which will also include a limited-edition jacket.</span></div></div><div><div class="OUTBRAIN" data-reactroot="" data-src="//www.9news.com.au/world/sydney-sweeney-us-retailer-stocks-soar-after-announcing-ad-campaign-with-euphoria-actress/dde7f694-48e6-464f-9083-f3f42d0d0fcf" data-widget-id="AR_5"></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>The actress rose to fame after roles in HBO's </span><em><span>Euphoria</span></em><span> and Netflix's </span><em><span>The White Lotus.</span></em></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><strong><span>READ MORE:</span></strong><span> </span><a href="https://www.9news.com.au/world/hulk-hogan-dead-donald-trump-pays-tribute-to-wrestling-icon/2f6943d1-fd93-47bd-9864-cfada73102cd" target="_blank"><strong><span>Donald Trump pays tribute to 'great friend' Hulk Hogan</span></strong></a></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Sweeny has become one of the most recognisable actresses in the US.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>She recently broke the internet after releasing a line of soap, which contained a small amount of her bathwater.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>The actress has been a part of many advertising campaigns, including for brands like Ford, Baskin-Robbins and luxury fashion brand Miu Miu.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Sweeny has over 25.5 million followers on Instagram. </span></div></div>