United Kingdom, April 29 -- Dannii Minogue is confident she "wouldn't be alive now" if she wasn't "mentally strong" enough to cope with constant comparison to her sister Kylie Minogue.

The 53-year-old singer and TV presenter has reflected on "brutal" body comparisons people made between her and older sister Kylie, 56, admitting they lasted years.

Speaking on Fearne Cotton's 'Happy Place' podcast, she said: "I've said this to my friends: 'I know that, if I wasn't mentally strong and I did have any kind of eating disorder or something, I wouldn't be alive now.' That is fact.

"It was so brutal, and it went on for years."

Dannii has a curvier body shape than her sibling, and admits it was hard to deal with so many "nasty comments" when "s...