Do you get to choose what trunk you want or does it just give you one at random?

You get to choose. It will show you all the trunks, and you can pick the one you want. Then you can select the trunk from your inventory and select whether you want the male set or the female set.

Yes, you get to choose which trunk you want. ^^

You can choose which trunk, as well as which gender. c:

Alright thank you very much for your help :)