The men had their own shirts. The women's T shirts were a women fit. I'll just order standard sizes in the future and wait for the complaints from the smaller end that they were too big. The race IS diminishing in size and it is possible it won't happen next year as too many ladies want to run the Race For Life events.
All the other events are increasing in size each year except the Women's 10K. I have tried to introduce a 5K and this year and attract male runners to the day but it has made little difference.
Just to add that if you look at the thread after the Tunnel 10K there will be the same complaints about T shirts not fitting. Despite the fact we order sizes indicated on the entry form people tend to take which ever one fits them on the day. I'm afraid it's a problem we are unlike,y to solve.