I managed to order just what I thought I needed.
When I looked at my t-shirt supply it was woefully lacking in plain, sh/sl t-shirts, the sort you can wear under tunic tops, etc. There's only 2 white ones (one about 3 years old and not so white), a pale blue/lilac and a black & white stripe
So I ordered a pale pink and another white, plus a flower-print slouchier one, and a pair of the cropped jeggings in turquiose
And after I'd clicked 'confirm' remembered I have a £25 M&S voucher sitting online courtesy of Sky
I know I'll spend it, but still!