Kyle holds a book signing at her new Hamptons pop up shop for Bethenny Frankel. The ladies enjoy a final dinner in the Hamptons, where Eileen shares a secret from her past. Erika uses her private plane to pick up Yolanda, while Kyle meets with her confidante Faye Resnick, who gives her some advice for dealing with her sister Kim. Lisa Vanderpump hosts a charity event where Lisa Rinna runs into an old friend with an intriguing past.