Dannii Minogue Dannii Minogue Dannii Minogue says the stress of her sister Kylie's illness led to a Botox addiction.

The skin-tightening injections became a necessity for the X Factor judge, Dannii admitted to The Sun.Kylie Minogue Kylie's illness triggered Dannii's Botox dependency

She said: "At first, it was something fun I tried, then it became a necessity."

She explained how she came to use the wrinkle-buster after Kylie was diagnosed with breast cancer: "My sister was sick, then my best friend died soon after - I felt I'd been hit by a wave.

"I couldn't deal with the stress. I couldn't deal with having to look at my face.

"It was a personal thing of having to get through a lot of sadness."

Thankfully Dannii has now kicked her forehead-injecting habit: "I don't need Botox now and don't want it. Life is just so different now."

See more celebrities who have experimented with cosmetic enhancements, in our gallery below.