There is no doubt that the Kardashians are the leading fashionistas in Hollywood and it turns out that their trendsetting ways are more influential than ever.

Australian designer Dena Danis has revealed that her company Constantina and Louise's website crashed twice after Khloe Kardashian arrived at Kim and Kanye's rehearsal dinner on Friday in one of her designs.

The frock that caused the internet meltdown was a plunging glitzy dusky rose number officially called the Lira gown.

The light weight dress with thigh-skimming split and dainty metallic sequins, dazzled against the 29-year-old Kardashian sister's bronzed skin and ombre hair.

Designer Dena, who had never expected her dress to be worn by a Kardashian, said that she was approached directly by Khloe herself without any public relations firm in the middle.

Photos: GraziaAustralia blue bridesmaid dresses

'Khloe contacted me directly," Danis explains.

'She said she saw the dress on Sydney Fashion Blogger,' she added in reference to local style blogger Antoinette Marie, who regularly wears Constantina and Louise designs in her online posts.

'But we had no idea what she wanted it for.'

It was only when Dena saw paparazzi shots of Khloe in Versailles that she realised her gown had gone global.

'We had no idea if she was going to wear it at all," she says.

'But it's been manic. It's been crazy.'

So much so, that the Constantina and Louise website had to undergo a quick reboot to make sure the dress Khloe wore is actually on it.

But Danis is also relieved that the 70s inspired gown was largely well-received by eagle-eyed fashion critics across the globe.

She says while it's hard to get your clothes on a celebrity, it can also backfire if they cop a lambasting by magazines, blogs and watercoolers worldwide.

The label does already have a cult following amongst Australian pop stars like Delta Goodrem and Ricki-Lee Coulter.

It looks like the Kardashians used the weekend-long wedding extravaganza as a real platform for Australian designers with Khloe's younger sister Kendal Jenner wearing a dress by Australian designer Johanna Johnson.

The 18-year-old's slim, model physique was on display at the same rehearsal dinner in the navy, silk slip-dress, as were her long legs thanks to a very high split.

Johnson's designs are regularly featured on red carpet events and she's even dressed the bride, Kim, on a few occasions.

But in some ways, she says such showbiz shindigs pale in comparison to a Kardashian wedding.'A wedding of this standing and exposure is always interesting,' she says.

'Weddings go down in history and the vision of such is often repeated, potentially more so than annual red carpet events.'