Domestic diva Jessica Alba wants to expand The Honest Company by taking inspiration from Reese Witherspoon’s media company Hello Sunshine — and sources claim it’s not going down well with her rival, RadarOnline.com has learned. Witherspoon, 47, is reportedly becoming “territorial” over her brand and is peeved at Alba’s alleged attempts to copy her style! “Reese is extremely territorial,” an insider dished to the National Enquirer. “She does not appreciate Jessica trying to copy her success!” The source additionally noted that the two actresses only play nice on camera. According to the tipster…