Kelly Reilly sits down with ET's Cassie DiLaura for a candid conversation on all things 'Yellowstone.' The 44yearold actress opens up about her character, Beth Dutton, like never before. Plus, Reilly gushes about costar Cole Hauser and their TV romance. 'ET Presents: 'Yellowstone' Aftershow,' which includes more from Reilly, along with other cast members, is streaming now on Paramount +.