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Speaking to The X Factor's new magazine X, Kylie said that she always had faith that her sister's career would flourish but felt bad about her own success.
The 'Get Outta My Way' singer said: "I would feel quite guilty sometimes although there was no reason to feel that.
"And I know the last thing she would ever want me to feel is bad."
Speaking of Dannii's popularity since joining The X Factor, Kylie added: "We’ve discussed all that and it’s all good. I always knew her time would come. I’m stoked for her."
> Kylie 'too expensive for X Factor bosses'
