I rarely wear white tops or cardigans, they look a bit like uniforms, but this little knitted cardi comes in very handy during the summer and it hides most of the top of my arms (which now look old, yes, I know, they are old!). The scarf is light enough to wear to stop any coolness making me feel uncomfortable. Here's a close up of it...
These narrow, pleated scarves are really handy for the summer. I have several of them, all bought from charity shops. I found two more yesterday, only 99p each. I always wash them before wearing, they tend to smell of the perfume the previous owners wore.
Talking of vintage, I watched http://www.channel4.com/programmes/this-old-thing-the-vintage-clothes-show/4od on Wednesday on channel 4 at 8 pm. Really enjoyed the programme. It was aimed at people much younger than I am but well worth watching at any age.