CM, do you really have to have a second bridesmaid?

We are going to blame our limiting the number of groomsmen my DP has (if we ever get married, but that's another issue) on me only having 2 sisters, so he's only having 1 best man and 1 groomsmen. Our DD would be flowergirl, but that's it. I've been bridesmaid twice before (and that's not to my sisters) and I don't intend to ask either of those friends to be my bridesmaid (not sure if that will be well received by one of them, but I will do my best to explain nicely!).

It's your day. Cutting down on one bridesmaid might just save you some $$ in flowers, dresses, etc too!