Santana, I think you're on the right track there; I've been wracking my brains over this one. However, Trim only fits the first half of the clue, there are another 3 letters for 'fashionable' making the total of 7. There's no Triminn or Trimmin, I looked, lol. Perhaps if we put our heads together...
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A smile is a curved line that sets things straight. ~ Anon.