Leona Lewis won't wear leather because she is a vegetarian.
The 25-year-old beauty wants to create a line of non-leather shoes and bags, and has also stopped wearing diamonds in protest at the way they are mined.
She said: 'I have been a vegetarian since I was 12 and I hate the thought of animals being killed just for our pleasure, so I won't wear leather.
'I would love to create my own range of non-leather bags and shoes that are affordable because it's not easy for everybody to buy alternatives.
'Also, I know diamonds are supposed to be a girl's best friend but it's impossible to know for sure where they have come from so I find it is safer just to avoid them altogether."
In recent years, issues have been raised over the mining of 'conflict
diamonds' in war-torn African countries such as Angola and Sierra Leone, where the profit from their sale has been used to fund continued fighting.
Leona has also revealed she watches hit US TV show 'America's Next Top Model for fashion advice.
She added: 'I am a huge fan of 'America's Next Top Model'. I watch it all the time and I've picked up quite a few fashion tips from it.
It's brilliant.