The X Factor singer refuses to wear leather because she is a vegetarian and wants more alternatives to be available.
The 25-year-old beauty 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.
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