The Expanding Photosphere Method (EPM) is one of the few methods for a direct determination of extragalactic distances. This is a variant of the Baade-Wesselink method to estimate distances to pulsating stars. This method was originally formulated for supernovae by Kirshner and Kwan (1974) and developed later on by others. In this method, the linear and angular radius of a homologously expanding optically thick SN ejecta is compared to derive the distance to the SN. In this talk, I will discuss the EPM and its application to Type II-plateau supernovae.