Costume ideas for our Girl character

For our girl character, the picture I have in mind for her is to be classic and innocent looking.
At the moment, we're unsure whether to keep her in the same clothes all the way through, so the ending makes more sense. As the whole music video is basically him reliving the past time with his girlfriend, and she died in an accident. Or to have her change outfits, which might be confusing.
We're sticking to the idea of having her in one outfit, as this is more relevant to the action and the story taking place.

This type of costume for our girl would be really good for portraying the idea of her being innocent and sweet. We also need to make sure that she's stylish and classic, as, again the image shown of the band is up to date and modern.
The colours used here are calm, which is a good idea to have for our girl as she needs to looked relaxed at all times.

Even though, this image is different clothing style to the one above, I believe it fits in to the the story, as the jumper looks like a boys jumper. Which shows a link between the two main characters. She also looks cute with her hair. But i think it'd be more femine to have her with her hair down.

This look, in a way combindes the two looks above together, with the classic floral print, but then mixing it with worker boots, oversized cardi and fraying the dress at the bottom. I think this could be a good idea to have for our girl, as it's modern and creates a good image for the music video. Her hair i think we should try and acheive, this could easily be done. Using all the hair accessories that us girls have, also the curls make her seem more innocent. However, the girl we have in mind has blonde hair, this again adds to the innocents.