I have had the same bright pink cardigan in my suitcase since my first visit to Goa in 1999. I have never, ever worn it and the only time it came out of my case was when I bought a new case and I put it in that.
We have had holidays in February, March, November and December and have always found the evenings warm or hot and therefore a cardy has never been called for.
Now that I have mentioned my cardy, I must actually take it out to see if a) it still fits and b) to check there are no moth holes in it.