So I went on Google while I was writing the dress shopping scene cuz I had been writing for a while, and I needed a break (don't come after me) and I found pictures of dresses for all the girls and hairstyles, which I then described in the fic. So here they are.
Lori - (with her hairpin)

Sophie -

Biana -

Linh - (with her tips)

Marella -