Miley Cyrus and Liam Hemsworth only announced their separation 11 days ago, but they’re already making it official.

Liam, 29, has hired famed US divorce lawyer Laura Wasser, who has represented high-profile clients including Kim Kardashian, Angelina Jolie and Ryan Reynolds, and filed divorce papers in Los Angeles citing “irreconcilable differences”.

PEOPLE reported the couple signed a prenuptial agreement ahead of their marriage in December 2018, so the divorce is expected to settled quickly.

Side note: Mamamia confesses the worst excuses we’ve used for a break-up. Post continues below video.

Liam’s filing comes less than two weeks after the former couple announced they had parted after eight months of marriage.

“Liam and Miley have agreed to separate at this time,” a representative for Miley said in a statement.

“Ever-evolving, changing as partners and individuals, they have decided this is what’s best while they both focus on themselves and careers.”

Following the split, which was made public just hours after Miley was spotted kissing Kaitlynn Carter on a boat in Italy, rumours swirled that she and Liam were not rushing into a divorce and had not ruled out reconciling in the future, but according the both E! and Entertainment Tonight ‘sources’, Liam changed his mind on that.

The ET ‘source’ said Liam realised it was time to move on.

Mamamia’s daily entertainment podcast The Spill discusses what the heck went down with Miley and Liam. Post continues below audio.

“Liam’s decision to file for divorce is sad, but in the end, it was never going to work,” the source said. “They are too different. Liam never wanted to share Miley with anyone. He loves her and he is far too traditional. He finally realised he just wants to start fresh.”

“At first, Liam wanted to just give it time but he finally felt like things were getting nasty and he didn’t want to drag it out publicly,” they said, explaining Liam’s decision to file the official paperwork. “He decided it was all too much.”

Neither party are requesting spousal support and according to E!’s source, the pair don’t have many joint assets to split between them other than their animals (seven dogs, two mini horses, two regular-sized horses, pig and three cats ¯\_(ツ)_/¯).

“They have a prenup and have kept earnings separate during the marriage,” E! News’ source said. “There is not a lot to divide other than the animals. They both have houses that were purchased individually before the marriage.

“Liam is just done with it. There is no turning back and he knows he wants to move on. They have not had a lot of communication. There is nothing to say.”

In July, Miley spoke about feeling like she didn’t "fit into a stereotypical wife role" in a cover interview for US Elle.

"I think it’s very confusing to people that I’m married. But my relationship is unique. I don’t know that I would ever publicly allow people in there because it’s so complex, and modern, and new that I don’t think we’re in a place where people would get it," she said of her relationship with Hemsworth.

"I mean, do people really think that I’m at home in a f*cking apron cooking dinner? I’m in a hetero relationship, but I still am very sexually attracted to women.

"People become vegetarian for health reasons, but bacon is still f-ing good, and I know that. I made a partner decision. This is the person I feel has my back the most. I definitely don’t fit into a stereotypical wife role. I don’t even like that word."

Miley and Liam first met on the set of The Last Song in 2010 when they were 16 and 19 respectively. After becoming engaged in 2012, the couple briefly split in 2013, before becoming engaged again in 2015.

Sharing her insight behind the split to radio personality Howard Stern in 2016, Miley said this period allowed them both "to grow up".

"I had to. I don’t like when relationships are two halves trying to make a whole," she said.

"You get time to be yourself. You get time to grow up. I think if you’re growing up attached to another person, you never really get solid as your own being."

Liam reiterated her sentiment in an interview with GQ Australia.

“Of course it was hard, man. But at the time we were going in different directions and it’s just what needed to happen,” he said.

“We were both super young and it was a good decision at the time - we both needed that.”