Katie convinces Lisa to let her host a "Girls' Night In" party on James's former night, but Billie Lee lashes out at Katie for not including her in the planning. Brittany throws an unexpected tantrum, causing her friends to speculate she's stressed over her engagement to Jax. Lala decides James is moving too fast in rebuilding their friendship, and Stassi creates her own personal holiday: National Outfit of the Day Day.

Lisa Vanderpump entrusts Sandoval and Schwartz with major responsibility as they scramble to get TomTom ready for its opening event, but Kristen is devastated when she learns she's not allowed to come. James erupts when Raquel considers attending "Girls' Night In," Lala advises Scheana not to overshare with Stassi, Katie and Kristen, and Jax celebrates his first birthday without the support of his parents.