The 46-year-old TV reporter sat down with Kris Jenner and her daughters Kim, Kourtney, Khloe and Kendall earlier this year to record an interview - but Kylie was noticeably absent from the chat despite posting pictures of herself at the studio on social media.
A source explained to the New York Post newspaper's Page Six column: ''She was all set to do the interview with her sisters, and she arrived to the location, ready to go.
''Then she bailed at the last minute because she thought the questions were going to be too tough.''
The claim comes shortly after Kylie, 20, revealed she had lip fillers after the first guy she kissed criticised her small pout.
The reality star admitted she had her mouth injected to make it plumper because she felt so ''insecure'' from the cruel comments.
Speaking to a therapist during a recent episode of her E! show 'Life of Kylie', she said: ''I was 15 and I was insecure about my lips. I have really small lips. And it was like one of my first kisses and a guy was like, 'I didn't think you would be a good kisser because you have such small lips.'
''But I took that really hard. Just when a guy you like says that, I don't know, it just really affected me. I just didn't feel desirable or pretty.''
Kylie said the incident encouraged her to change the appearance of her lips.
She shared: ''I really wanted bigger lips. I would overline my lips with lip liner just to create the illusion of bigger lips. And then finally I was like this lip liner isn't doing it. [I] ended up getting my lips done.''
In her latest collaboration with Cash Money's Lil Wayne, Nicki Minaj finally unveils the video for her 'Queen' single 'Good Form'.
In the Hall By The Sea at Dreamland, Reef brought their Revelation tour to life as they delivered one of the best live sets I've had the privilege to...
Sharon Van Etten unveils an ominous black and white video directed by Katherine Dieckmann for her latest song 'Jupiter 4'.
As the nights draw in and the temperature drops, Crooked Man treats us to a fabulous slice of sun-soaked House, Disco and Electro.
The 1975's third studio album 'A Brief Inquiry into Online Relationships' is imminent, with another album ('Notes on a Conditional Form') already...
This New York quartet have teamed alongside Canadian rocker Billy Raffoul for their new tune 'Say Amen'. It's their second official single of the...
Tristan Corrigan on the difficulties of making music within a genre that is so popular.
From 'Happy' to 'Banana Pancakes', these are soaked in positivity.