Kathy Hilton's Best Real Housewives of Beverly Hills Moments (So Far)

For the last few seasons, Richards has been seen as the leader of the group of women in Beverly Hills. But leave it to her big sister to knock her down a few pegs by calling her by her childhood nickname, "Doogie," in front of the ladies.

When asked what "Doogie" meant by producers, Hilton simply laughed and said it was a loving nickname that she and sister Kim Richards (a former cast member) would call their youngest sis.

The latest Beverly Hills Housewife has already reached icon status, and she's just getting funnier. Kathy Hilton, 62, is naturally hysterical, loves a good prank and is unapologetically herself. So when the mom of five kicked off the show by genuinely mistaking Garcelle Beauvais for her own sister Kyle Richards, the other ladies (and the audience) knew they were going to be in for a hilarious ride for the rest of season 11.

While the women flaunt their most expensive couture to casual barbecues and local trips, Hilton has been seen wearing graphic tees with inspirational sayings on them. "Be a nice human" was one, and "Girls can do anything" was another.

As the ladies unpacked their meticulously styled designer outfits for their Lake Tahoe trip, Hilton planned to throw on some sweats and call it a day. As Richards tried to explain how the other women usually pull out their best looks, she ultimately stopped because she knew her big sis would do her own thing no matter what, and we love her for that.

Rules are meant to be broken, at least according to Hilton, who was asked to share two truths and a lie and decided to mix it up by just sharing three truths.

Hilton had trouble sleeping in Tahoe, so she decided to bring her fan, snacks and newspapers to Richards' room at 12:52 in the morning.

As Richards tossed and turned, Hilton munched on chips and drank Red Bull, completely oblivious to the fact that she was downing an energy drink. A groggy Richards eventually pointed it out, but Hilton shrugged it off and said she thought it was a soft drink, and continued on with her insomniac behaviors.

Classic Kathy.

Once she got through her chips and Red Bull, Hilton flipped through her six newspapers while Richards started to freak out about not being able to sleep. She told her big sister that she always tries to go to bed early, to which Hilton replied, "Well, that's nice," and continued to do her thing.

The next morning, Richards went into Hilton's room at 11 a.m. to find her dead asleep. As the women prepared to go on their first excursion, Hilton stayed back and told Richards to "go away."

The group's newly minted chief prankster decided to amp things up at dinner in Tahoe with a little prank. She secretly ordered water in martini glasses with olives and got a few of the ladies to pretend that they were downing several martinis. The prank was hilarious and refreshing, although it made Sutton feel left out, which turned into its own bit of drama.

Regardless, it was hysterical, and nice to see the RHOBH ladies loosen up a bit.