The cosmetics giant is facing serious challenges in China.Shares of Estée Lauder (EL -20.83%) were taking a dive today as the cosmetics giant continued to struggle with weakness in China as the company also cut its dividend and pulled its guidance for the fiscal year, reflecting a lack of visibility into the China situation and a need to reinvest in the business.The stock was down 19.3% on the news as of 12:38 p.m. ET. Estée Lauder's challenges continueEstée Lauder, which owns brands like Aveda, Clinique, L ...