Don't really like the hairstyle but those attires that you chose are close to perfect. It kinda feels like something that Hikki would wear (those heels especially, lol)

Her First Love style was funny. I think it's pretty amazing that she could become so famous even with that simple and innocent style. It was quite tomboyish (the shirt and pants), overall not very appealing and the video sucked (no offense). I think it's safe to say that Hikki didn't really rely much on looks to popularize her music.

She looked good during Ultra Blue too. (wasn't too skinny for my taste).

...and I concur with FunkyStrawberries. Utada is one of those who are able to pull off boyish style without looking too butch-y. IMO she still looked great during Heart Station.