Bridesmaids

So my new project, with the working title Bridesmaids, I am thinking of breaking up into 3 - 5 sections within the book. For example, if there are three characters each would have their name heading up a section of the book and that would discuss their wedding. Or I could just writer chapters with titles. But i am thinking of writing this as first person so that is why I want to make it clear who is speaking.