‘Better Than Today’ singer Kylie Minogue says her sister Dannii is the perfect judge for ‘The X-Factor’ because she always gives her honest opinion. Kylie wasn’t surprised when younger sister Dannii was asked to be on the show’s panel because of her critical expertise. “Dannii is so honest, she’s perfect for ‘X Factor’. Before she was a judge on the show, she would come to my concerts and I always knew I was going to get a real opinion,” explains Kylie. “Like she’d say, ‘Dancers two and five were off.’ She’d give me a list of things.” She may be able to accept criticism from her sibling, but Kylie admits she can be a diva when it comes to other areas of her life. “I need to be more of a diva. I promise I’ve got my diva stripes in other areas. I’ve had every possible hairdo ever.”