Ashlee Simpson has joked that she is more attractive than sister Jessica.The singer claims she is prettier than the 'Dukes Of Hazzard' star, despite denying rumours of sibling rivalry in the past.She is quoted in Scotland's Daily Record newspaper as saying: "I'm taller than she is and my legs are longer than hers…I got lucky because my chest size isn't completely massiveBoth sisters have been the stars of successful reality TV shows - Jessica appeared with estranged husband Nick Lachey in 'Newleyweds', while Ashlee fronted the 'Ashlee Simpson Show'.Earlier this year, Ashlee claimed that she gets violent when people attack her big sister.The blonde star insisted she is very protective over her older sibling, who is currently divorcing Nick, and isn't impressed when people criticise her.

She said at the time: "When I read somebody saying something about Jessica, I just want to kick them.'