Was going to suggest Animal but you are sorted now!

Just bought a men's cap, navy blue, in M&S. It will be put in without comment (she won't bother looking, she'll just get out what she wants to take and I'll pop it in amongst everything)
Thanks for help

DD1 14 has gone off on a residential with school this weekend, with orders to take a cap. After several weeks of looking in vain and refusing to wear any of them, she ended up packing dp's gardening baseball cap!

Well we had a highly unsccessful shopping trip!!
I told her we were looking and she was very unimpressed! One major problem is, she has a big head (full of brains!) and so a lot of hats, like all the ones in Accessorize, simply do not fit . I have said she has to take something, even if she doesn't wear it, so guess I will just get a v basic baseball cap, in men's size, and chuck that in her case!

Ho hum

I have a 12 yr old dd too - who is also fussy about wearing a hat now. I got her a plain cream baseball-style hat for her school trip (adult size). Seems to have been acceptable!

Sorry I disappeared and thanks for your help.
I'm not sure the cowboy hat is her thing, a bit too ostentatious I think, but thank you.
We have an Accessorise nearby, I hadn't thought to look in there.
Baseball cap...I think it may come down to that in the end, for the reasons you say, but will attempt other suggestions first.
Thanks again

I would try to persuade her into a baseball hat or similar. At least go for something she can scrunch up in the bottom of her bag when the sun isn't too strong, whilst having it accessible as the teachers will insist.

take her to accessorize - no girl can refuse all the hats in there

straw cowboy hat