I was thinking of putting a basket of flip flops out for the women who want to kick off thier shoes, but I have no clue how many to buy. I have around 200 guests, so about 100 women, do you think 60 is good? I want people to take them, but I don't want flips flops in baskets strew all over my reception

I was actually thinking of just putting them in the bathroom. Any thought or ideas for me on this?
Thanks!!