Kourtney Kardashian's near nip-slip

The oldest Kardashian sister has had an unfortunate near nip-slip while out and about with sister Kendall Jenner recently.

Kourtney, 38, is no stranger to wearing revealing outfits, but this racy ensemble may have pushed the boundaries after accidentally flashing her nipple pasty.

She stole the show wearing a sheer little black dress showing off more than her toned bod and trim pins.

The mum-of-three's black strapless overlay accidentally slid down, revealing a heart-shaped nipple pasty, sending the paparazzi into a feeding frenzy.

The pair strutted their way into celebrity hotspot, Craigs, while they held hands heading into dinner for the night in West Hollywood.

The wardrobe malfunction comes after fans compared her to ex-Scott Disick's new flame Sofia Richie on Instagram.

In a photo of the loved-up pair shared to the reality star's social media account, and people were quick to comment on their striking resemblance.

"Omg I thought it's Kourtney..," one fan wrote, with another writing, "she looks like a young Kourtney Kardashian."

• Sofia Richie flaunts toned figure in skimpy white bikini

• Ellen claims Kourtney and Kendall are 'pregnant' too

"She's looking more and more like Kourtney every time," a user wrote, as another said they were seeing 'double'.

Got a story tip? Send it to tips@yahoo7.com.au

Want more celebrity, entertainment and lifestyle news? Follow Be on Facebook, Twitter, Pinterest, Tumblr and Instagram