An unusual set of systems, displaying key characteristics of microemulsions have been discovered using highly branched chain anionic surfactant stabilizers (Figure 1). Preliminary (and reproducible) SANS data point to the possibility that there are two droplet populations in these stable, transparent phase systems (Figure 1). However, there is no currently accepted model for microemulsion formation that allows for TWO DISTINCT DROPLET POPULATIONS in equilibrium. The purpose of this proposal is to investigate the structure of these intriguing ?microemulsion systems? and probe their odd behavior.