fashionaholic
(n.) State in which a person is undeniable, uncontrollably and incurably addicted to anything fashion related. The person may experience constant shopping, online shopping, window shopping or wishing they were shopping. Other symptoms include making their own clothes, drawing clothes, talking about clothes and touching and smelling clothes. Failure to achieve these while in the state of being a fashionaholic may end in constant and excessive crying, shouting, screaming and/or hyperventilation.
Fashionaholics are always fashionably put together, are rarely ever behind in the fashion "what nows" and practically worship top name designers.