Glamorous Gold Coast sisters Allaina Vader and Rikki Louise Jones are caught up in the falling out between their bikie boyfriends, Ben "Notorious" Geppert and Brett "Kaos" Pechey.
Pechey, 31, once Queensland's most wanted bikie, and Geppert, 26, have become involved in an online fight via Instagram.
Until recently the two bikies were "brothers-in-law" by virtue of their relationships with Instagram star sisters Allaina and Rikki Louise.
But last weekend their friendship appeared to be over when Notorious made the unsubstantiated claim that Kaos was a "dog", or police informant.
In Instagram photos, Geppert takes his Brothers 4 Life gang T-shirt — which he had proudly worn with Kaos's thumbs up approval on Instagram — and throws it on the ground.
News.com.au understands that Gold Coast police have interviewed Pechey over his knowledge of the Brothers 4 Life gang, which is trying to gain a foothold in Queensland.
Following the stoush, Geppert branded Kaos on Instagram making unsubstantiated claims that he was a "weak dog" and unfollowed him.
The now warring bikies' sister girlfriends have been dating the heavily tattooed bikies, who came from rival gangs, since last year.
Tattooed blonde Ms Vader is also the ex-girlfriend of one of Australia's most feared bikies, former Bandido enforcer turned Hells Angels boss John Fahey.
Kaos Pechey was a close friend of the family of John Fahey, who Ms Vader stood by as a staunch bikie girlfriend five years ago during a massive police crackdown on him and other Gold Coast bikies.
It is believed that Rikki Louise met Kaos during Ms Vader's relationship with Fahey, but did not start going out with him until recently.
Rikki Louise met "Kaos" Pechey while her sister was in a relationship with Fahey, whose brother is a close friend of Pechey's.
Pechey is a former president of the notorious Bandido gang, which is the arch rival of the Comanchero gang, of which slain Sydney bikie Mick Hawi was national president.
News.com.au revealed earlier this month that Allaina Vader and "Notorious" Geppert, an ex-Hells Angel and Fink were thrown off the luxury Hamilton Island resort.
The incident, which Ms Vader recorded on video, happened after an altercation with resort management while the couple was celebrating Geppert's 26th birthday.
"Kaos" Pechey, who told a Queensland magistrate three years ago he was trying to laser off some of his distinctive facial tattoos, pleaded guilty in Brisbane Magistrates Court last month to a charge of unlawful possession of a weapon.
Despite the two bikie couples spending time together on the Gold Coast swimming and sunning themselves, the men have now fallen out over Geppert's unsubstantiated claims that Pechey has been "talking to the task force".
Allaina Vader, who has become much more glamorous since she began going out with her younger bikie beau Geppert, famously stood by her previous bikie man when he was in trouble.
In late 2013, 37-year-old Fahey was arrested by heavily armed officers while a police helicopter hovered overhead as he was dining at Nando's restaurant in Mermaid Beach.
The former Bandidos national sergeant at arms had controversially patched over to the Hells Angels in the same year.
Then red-haired, Allaina Jones stood by her then-boyfriend, who is also the father of her daughter, during a subsequent court appearance.
Fahey pleaded guilty in Southport Magistrates Court to taking part in a fight against two rival bikies outside the Sculpt Training Centre at Burleigh Heads.
With her long, dyed red locks, heavily tattooed body and figure-hugging black outfit, Allaina cut a striking figure at Southport Magistrates Court in 2013.
One of Allaina's many tattoos reads, "I am good but I'm not an angel. I do sin but I am not the devil. I am just a small girl in a big world."
The tattoo on Allaina's back was still clearly visible as she sunbaked on Hamilton Island with Notorious Geppert before they were ejected from the resort in early February.
Whitsunday Island Local Area Command issued Geppert, 26, and Ms Vader, 27, with infringement notices for threatening behaviour in or near a licensed premises.
Later, Ms Vader dismissed the penalty, which incurs a fine of up to $683, with an Instagram post which also disparaged the island.
"Two fines pfffff brrrrrrt throw it on our tabs ya dogs," Ms Vader posted.
"I hated it there! Everything was shut the humans f***ed got our money back and free yacht ride to the mainland F***ing winning."
The couple had earlier posted photographs lazing around the Whitsunday Islands Apartments pool displaying their many tattoos.
Now blonde and having shed weight following intense gym sessions that she takes with her sister Rikki Louise, Ms Vader has 156,000 Instagram followers.
Her sister Rikki Louise has 30,600 following her on Instagram and the sisters post frequently about their weightlifting and beauty treatments.
Rikki Lousie recently posted on Instagram that Kaos Pechey was "the man of my dreams".
In 2015, former Bandidos sergeant-at-arms was extradited from Thailand to face charges of extortion.
He later pleaded guilty and avoided a jail sentence.
Pechey was praised for saying that he would spent $10,000 to get some of his many face tattoos lasered off.
The ex-bikie's tattoos included the words "Inshallah", which means God willing in Arabic, and the number 187, which US gangs are known to ink onto their skin to represent the Californian statutory code for murder.
Pechey has attempted to remove some of his face tattoos, but most still remain.