I follow the lives of a group of wealthy women, but I'm not 'The Real Housewives.' My cast members are known for their extravagant lifestyles, intense drama, and fierce competition, particularly in the world of fashion and social influence. What reality TV show am I?

1. The show originally aired on MTV.
2. One of the show's stars is known for her iconic blonde hair and signature catchphrases.
3. The series is set in Los Angeles and revolves around a group of friends and frenemies.
4. The show has seen cast members launch successful businesses and careers outside of the show.