Kathy Hilton's Advice to Kyle Richards? "Don't Swear!"

We're sure The Real Housewives of Beverly Hills' Kyle Richards appreciates her big sister's advice, but sometimes darn isn't the four-letter word that comes to mind when you're having it out with a co-star. Case in point – Kyle's recent dinner shouting match with Camille Grammer.

"Every time I watch these episodes, it brings up everything that I was feeling at that time, good and bad," Kyle tells TV Guide. "When I'm upset, I'm just a very honest person. What you see is what you get. Unfortunately, when I'm upset a horrible four-letter word will come out of my mouth now and then. I wish I could control it, but I obviously wasn't able to. I really don't think about the cameras, I tune them out. When I told my sister, Kathy [Hilton], I was going to do the show. Kathy's like, 'Don't swear. Don't swear.' I told her I wouldn't, but you've got to be yourself."

Okay, so Kyle's not exactly giving truck drivers competition, but her no-holding-back attitude is quickly winning her fans. "Maybe they can tell that I'm being myself and being honest. I know that a lot of people make that comment to me. There are some people who think I shouldn't always be so honest and keep my mouth shut, but a majority respect that I'm showing all sides, the good, the bad and the ugly."

Ugly? What ugly? Kyle was voted E! Online's prettiest Housewife (and hubby Mauricio isn't too shabby, neither).