The 31-year-old television personality wore a one-piece bathing suit while the 21-year-old model went shirtless for the afternoon in the sun.
The day before, Paris and River showed some PDA and shared some kisses while taking a dip in the pool.
“Day 2 by the pool with my gorgeous Blonde @ParisHilton #LifeisPerfect,” River tweeted.
FYI: Paris covered up later in the day with Levi’s cut-off denim shorts.
25+ pictures inside of Paris Hilton and River Viiperi by the pool… More Here! »