Blac Chyna has urged fans not to send Rob Kardashian intimate pictures.

Rob Kardashian

Rob Kardashian

The 'Keeping Up With The Kardashians' star recently signed up to the app, which allows users to send photos and videos which "self destruct" after an elapsed time, but his girlfriend is already warning off female admirers from sending him explicit messages.

Soon after she posted Rob's username online, she shared: "Let me tell you all something, don't be snapping my boo that p****y (sic)"

Meanwhile, Blac's close pal Amber Rose previously revealed she considers the 27-year-old model - who has three-year-old son King Cairo Stevenson with former partner Tyga - a good influence on the 28-year-old sock designer.

She said: "I think if people are happy then that's what's most important. Period. They're working out. Chyna is cooking healthy meals for him. It's a really, really good vibe ...

"Man Rob is the coolest guy you'll ever meet in your life. He's realistic, you know. He's an amazing person. And it's sad that people don't really get to see that. He's just down to earth ... and just, just cool. Like he gets life. He gets it."