"The Hills" Stars Heidi Montag And Spencer Pratt Still Feuding

Las Vegas, NV (CNS) - Spencer Pratt and Heidi Montag let the world know they were feuding on "The Hills" on Monday night, and the feud has continued and moved on to Las Vegas. The two are in Vegas filming for their show, but are staying in separate rooms, and in fact separate hotels.

Pratt has checked into the Hard Rock while Montag is staying at the Palazzo. Montag told Pratt on Monday's show that she needed space, and she still appears to need it. The on-again, off-again couple seems to definitely be off. While working in Vegas the two could be seen arguing for the cameras at the Palazzo's Dos Caminos restaurant.

When the cameras stopped rolling the two had little off-camera interaction. After the filming scenes at the restaurant, Pratt left the restaurant while Montag stayed behind, hanging out with Los Angeles club promoter and her boss Brent Bolthouse from "The Hills."