Whether you love them or not, Spencer Pratt and Heidi Montag are also back, along with Spencer's sister Stephanie Pratt (who had a smaller part on the original show).

But since the O.G. Hills went off air, a lot of drama has apparently gone down between the Pratt siblings. Let's take a moment to recap...

Spencer and Stephanie drama's started back in 2007.

According to E! News , the drama between Spencer and Stephanie started all the way back when Stephanie started appearing on The Hills during season 3 in 2007. She was totally Team Speidi at first, and even caused a ruckus trying to defend Heidi and Spencer to LC and Audrina.

"Heidi's my family now," Stephanie said during one of her clashes. "They're getting married. When you hate my brother, it makes me hate you."

But soon after, Stephanie and Lauren became friends. While Stephanie tried to keep it on the DL, apparently when Spencer and Heidi saw L.C. and Stephanie photographed together in the summer of 2008, it was the beginning of the end.

Stephanie was a bridesmaid in Spencer and Heidi's wedding.

Heidi and Spencer eloped unofficially in November 2008, and while Stephanie was a bridesmaid in their official wedding, she wrote in her memoir Made in Reality , "Little did I know that it would be the last fond memory I would have of them for some time."

The series finale of The Hills aired on May 18, 2010. Spencer and Heidi went on to appear on more reality shows, Heidi had her infamous plastic surgery, and eventually the couple had a baby boy, Gunnar, in 2017.

Stephanie moved to England after The Hills went off air.

Stephanie starred in the show Made in Chelsea in the U.K. and competed on Celebrity Big Brother. Apparently, she found out on her birthday that her big brother was going to be a father from reading The Daily Mail. For Stephanie, that was the nail in the coffin.

And according to E! News, she's only met her nephew Gunnar five times.

"[Their] child just turned 1 and I have seen him five times," she said on Pratt Cast in December . "I held him once. It's horrific, but I'm still in a good mood. It's all good."

Stephanie and Spencer weren't speaking when 'The Hills: New Beginnings' started filming.

Ultimately, Stephanie blames Heidi for the rift with her brother.

According to Us Weekly , Stephanie told her podcast listeners that in April 2019 that she and her brother were no longer on speaking terms due to Heidi, whom she called a gold digger.

"The behavior that Ive seen Im done. This is why I moved to London, she said. They are the most toxic people Ive ever met. They are Bonnie and Clyde till they die. So if they say, The sky is black, all of us are morons for saying, Its blue. Im going to expose them for who they are."

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She also added that she felt she'd been protecting the couple for 10 years, but was over it.

"I've literally protected her for 10 years," she said on an April episode of Pratt Cast. "If it weren't for Heidi, I would have an epic relationship with my brother, so would my parents. But Heidi does not want my brother to be connected to my mom, dad or me."

And earlier in June, she apparently told Us Weekly that her relationship with Spencer is 'nonexistent.'

"I love doing this [revival] now because Im separate from my family, for the most part, the Made in Reality author said. Everythings the same [with Spencer], non-existent. But every family has drama!"

For the cherry on top, Stephanie also shared with ET Online that the drama between her and Speidi resulted in her being hospitalized a few times.

This is juicy for sure.