Raising money for two charities

I'm just after some ideas from those of you who may have done the same in the past. I'm running Bath Half in March for CLIC Sargent and Headway in memory of my dad who passed away last month and also my father-in-law who passed away late last year. Both charities are sending me running vests and I don't want to run with just one as I'm supporting both charities. Is there a way of combining the two or should I not wear either? Any ideas would be welcome, thank you.

You could unpick them at the seams and then sew them together, so they show one at the front and one at the back, or you could stop half way and swop vests.

To save time you could ask the organisers for two copies of your number, then you wouldn't have to unpin it and pin it back on.

To be honest I did think of both ideas.....Do race organisers issue duplicate numbers?

Do it twice?