Vegetarian since she age 12.
Has a vegan clothing line, though may not be fully vegan, please confirm for HappyCow.
Posted on 10 / 17 / 2012
She was on the national breakfast show this morning in the UK and announced that she is vegan. It's a recent conversion, and PETA reported it earlier this month: www.peta.org/b/thepetafiles/archive/2012/10/05/james-cameron-leona-lewis-go-vegan.aspx