Los Angeles: Socialite and reality TV star Kim Kardashian has coloured her brunette locks blonde.The 32-year-old flaunted the new look at a friend's Labour Day party in Beverly Hills here.Kim, who gave birth to her first child, daughter North, with rapper-boyfriend Kanye West, was seen taking her baby in a carrier with sister Kourtney following closely behind.She was wearing an olive green button-down shirt, a pair of skinny jeans and nude-coloured sandals.Kim also perfectly highlighted her new lighter locks with a thick gold chain around her neck.