MAIN SHOOT - Christopher's costume

We decided that the outfit Christopher wore in the test shoot was too formal - he looked more like someone on his way to work than a student.

Christopher's test shoot outfit

For the main shoot, we decided it would be more appropriate if he wore a coloured shirt with black trousers - that way, he wouldn't be too casual (e.g. with jeans) so he would stand out as an interesting and different character, which is what we want.
Also, a coloured shirt looks brighter and better connotes the more light-hearted aspect of our genre (romantic comedy-drama).

Here were our options:

We decided on this shirt...

…with these trousers

We decided that this combination was best - the green/blue shirts weren't colourful enough and the bigger checks looked better. With the trousers it was the right balance of smart/casual. 

The other shirts will be placed in the wardrobe (in the test shoot, this shot):

They are similar enough to the shirt he will be wearing to demonstrate his need for routine, which is essential to his OCD/social anxiety.