Kyle Richards has been a part of The Real Housewives of Beverly Hills since the show's inception and has continued to be one of the best parts of the series. Her relationship with her sister (and former housewife) Kim has been a longstanding storyline but Kyle is much more than "the sister of Kim Richards."

RELATED: The Real Housewives Of Beverly Hills: 5 Reasons Lisa Vanderpump Is The Show's Biggest Villain (& 5 Reasons It's Kyle Richards)

Kyle has stood on her own two feet over the years and has done things that fans have supported and shuddered at. From the fallout of her friendship with Lisa Vanderpump to the drama behind her long-term marriage, Kyle's presence on the show only becomes more and more fascinating as time goes by.

Supported: Those Cheating Allegations Nearly Broke Her

did mauricio cheat on kyle - rhobh - season 4

Early in the series, rumors began swirling around Kyle Richards' marriage to real estate mogul, Mauricio Umansky. Kyle was shattered but denied the rumors wholeheartedly. The other housewives couldn't do the same, sadly.

In one scene, Lisa Vandermp makes light of the situation and asks Kyle if the "younger woman" Mauricio was seen with was one of their daughters. To make matters worse, Lisa said this in front of Mauricio and their youngest daughter, Portia. The look of disappointment and fear on Kyle's face said it all. It was a low blow by Lisa.

Went Too Far: She Went Too Hard With Kim In The Limo

Kyle and Kim Richards fighting in the limo on RHOBH

The relationship between Kim and Kyle Richards has always been dark throughout The Real Housewives of Beverly Hills. Kim's addiction issues proved to be more than Kyle could cope with and things came to a boiling point many times over the years.

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One scene that was hard to watch was their fight in the limo. Kyle wanted to confront Kim about her addiction to alcohol but came off too strong. Kyle let her emotions get the best of her and became too aggressive. She got closer and closer to Kim as tears started rolling and harsh words were thrown around. While fans felt sorry for Kyle, they were in Kim's corner.

Supported: The Fall Out With LVP

Lisa Vanderpump and Kyle Richards talking on RHOBH

Kyle and Lisa Vanderpump were friends for a long time. They were both incredibly loyal and supported each other through everything. When one was hurting, the other felt her pain. However, Kyle had to stay true to herself. When PuppyGate was in full effect, the evidence stacked up against Lisa, and Kyle couldn't defend her anymore.

She tried talking about it with Lisa, but it became clear that Lisa didn't want a friend like Kyle around if she believed others over her. LVP and Ken kicked Kyle out of their home and that was the end of their friendship. The scene was upsetting to watch.

Went Too Far: Why Was She So Angry At Dorit's Glam?

kyle vs dorits glam - rhobh

In the 10th season, Teddi had a fitness event for her brand and invited all of the girls out of respect. Only a few of the ladies showed up for Teddi and the weekend was a disaster.

Dorit told Teddi from the beginning that she was going to be late for the day and not to wait up for her. But when Kyle saw that Dorit was at home in full glam taking pictures inside her house, she poked fun at Dorit for being a bad friend. She didn't understand why taking pictures at home was more important than being there for Teddi. The entire argument seemed strange, especially since Dorit already told Teddi she was running late. Why did Kyle care so much about Dorit's business?

Supported: Her Trauma From The Death Of Her Mother

Kyle Richards looking upset on RHOBH

Kyle is one of the more honest housewives on the show. She's been transparent about her acting career, her relationship with Kim, and the difficulties of having a marriage in the spotlight. She has also been open about her struggle with anxiety.

RELATED: Real Housewives: 10 Most Emotional Deaths

Kyle breaks down in tears and visibly shakes when her anxiety gets the best of her. This is seen when Kyle talks about losing her mother to breast cancer. Whenever a conversation revolves around the hospital or cancer, Kyle breaks down.

Went Too Far: She Was Ignorant Around Carlton's Religion

Carlton Gebbia on rhobh

Carlton Gebbia only lasted one season, as she didn't get along with most of the housewives, Kyle especially.

Carlton was a Wiccan and very proud of her religion. She was financially independent and her home was also designed in a gothic-style, which confused a few of the housewives. Kyle took the lead and questioned Carlton's religion and thought her pentagram tattoo was the Star of David. This ignorance was negatively received and deeply offended Carlton. But she didn't have enough ammo to go against Kyle and sadly never came back on the show.

Supported: Her Friendship With Teddi

Real Housewives Of Beverly Hills Teddi Kyle

Teddi Mellencamp Arroyave wasn't the most interesting housewife on RHOBH. She never seemed to have an authentic storyline and was always just kind of there. But Kyle adored Teddi and the two became extremely close.

The other housewives, however, thought Kyle's relationship with Teddi was odd and badmouthed it over the series. But the question remains: why do people care that Kyle and Teddi are close? It was odd that Kyle had to justify her friendship with Teddi.

Went Too Far: She Was Too Rough On Brandi

Kyle, Brandi, and Kim fighting on RHOBH

Brandi and Kyle got off on the wrong foot and only became friendly in recent seasons (largely in part to Kim's friendship with Brandi).

During Brandi's first season on RHOBH, Kyle immediately took a disliking to her after she called herself a "slut" and later brought up Kyle's marriage to Mauricio. Things only got worse from there. At a game night at Dana's house, Kim and Kyle ganged up on Brandi and were incredibly cold towards her. They called her names and ostracized her. Brandi left in tears and it was solely due to Kyle's aggression.

Supported: Kyle Vs. PK

pk vs kyle - rhobh

PuppyGate was such a significant storyline for RHOBH because it had affected so many people. It wasn't just Dorit vs. Lisa Vanderpump. It was Dorit vs. Teddi vs. Kyle vs. Ken vs. PK — everyone was involved!

While Lisa and Ken were on the outs with the group, PK made a dig at Kyle and said "You could have issues. You couldn't even get along with your best friend, so you could have issues." All the women's mouths dropped to the floor because it wasn't cool for Dorit's husband (of all people) to get involved with Kyle's drama — especially when PK was also having his own issues with Lisa and Ken!

Went Too Far: She Shamed Erika & Dorit's Friendship

RHOBH - Women at brunch

Kyle had an emotional 10th season. She had disagreements with most of the ladies, and it came to a head at Erika's dinner party.

Kyle dissed Dorit and said that she wasn't as "good as friends" with Erika as she believed. And when Erika stepped in, Kyle quickly shot another insult and claimed Erika didn't have close friends. All of this anger seemed unwarranted and deeply hurt Erika and Dorit. Where was this all coming from?

NEXT: Real Housewives: How Do Producers Choose The Cast?