I should probably mention at this point if I haven't already, that I have 4 adult bridesmaids: 2 are best friends from uni and 2 are J's sisters.
Seems like quite a lot compared to many people on here, but they were the obvious choice for me.
We are also having a little niece as flower girl (daughter J's older sister). She'll be 3.5 and a completely loose cannon :)
J has a best man and 4 ushers so it's nicely balanced. (And J will be best man to his best man next summer so lots of nice symmetry there too )