Kylie Minogue has admitted that she will never be able to match Christina Aguilera’s vocal ability.

The Australian pop icon, who releases new album, 'The Abbey Road Sessions,' tomorrow, told Closer magazine she’s aware of her limitations as a singer:

"I will never sound like Christina Aguilera, but that's OK. I have pipes!" 

However, the 44-year-old, who last week apologised to Pippa Middleton for challenging her to a bum-off, did reveal her annoyance at how some people think her job is easy:

"And you think strutting around on stage in seven-inch heels and a dress I can barely balance in while walking over five semi-clad men is easy? Think again!"