Chanel designer Karl Lagerfield has laughed off singer/actress Lindsay Lohan's claims she will front the fashion house's next advertising campaign, insisting she is too immature. In December the Mean Girls star boasted she had won a lucrative contract with the fashion giant, following supermodel Kate Moss' dismissal over allegations of drug abuse. But chief designer Lagerfield insists the label needs more sophisticated icons, such as film star Nicole Kidman - who advertises signature scent Chanel Number 5. The 67-year-old tells New York magazine, "I prefer Nicole Kidman and that generation."