Dannii Minogue is sexier than her sister KYLIE, according to music mogul Simon Cowell. Cowell and Minogue join Sharon Osbourne and Irish music mogul Louis Walsh to judge wannabe pop acts on British TV show The X factor. The American Idol judge admits, "I tell you something, given the choice between Kylie and Dannii, I would go for Dannii any day. "There's something about her that's very mysterious - I think she keeps some aspects of her character private. She's an incredibly sexy girl, but she doesn't realise how sexy she is. "I think she has been a little bit in Kylie's shadow, but she is, in her own right, very intelligent and very savvy."