Los Angeles: Reality TV star Kim Kardashian West has been "really supportive" of Kylie Jenner after the 17-year-old model revealed she had been bullied from the age of nine.

Kim Kardashian
Kim Kardashian. Pic/Santa Banta 

"Kim has been really supportive of Kylie and has been more like a mom to her than a big sister. She knows how sensitive Kylie is and especially how tormented she gets after reading hurtful comments on the Internet.

"Kim's advice is simple, 'Don't read the comments'. This is something she knows from first-hand experience," a source told hollywoodlife.com.

Kylie revealed her bullying woes in a video posted on photo-sharing application Snapchat.

She said: "It's kind of crazy I have four million people watch my Snapchats. Half of you guys think I'm weird, and the other half think I'm funny.

"But I've been bullied since I've been nine. From the whole world, it feels like sometimes... and I think that I've done a really great job in handling all this."