The biggest mall owner in the U.S., Simon Property Group, is teaming with online shopping site Rue La La’s parent company to launch a new kind of website for people looking for deals. The real estate company announced Wednesday it’s partnering with Rue Gilt Groupe, which is backed by Michael Rubin, CEO of Fanatics’ parent company Kynetic, to create a new e-commerce business for discount shopping. Simon has been testing the website “ShopPremiumOutlets.com” since March, building on its premium outlet centers business. The mall owner operates dozens of premium outlet centers nationwide and a handful overseas. It’s been working with certain retailers at those centers — which include Woodbury Common Premium Outlets in New York — to test selling merchandise together on this site. It says it has signed on more than 2,000 designers, and has about 300,000 products. Click to read more at www.cnbc.com.