Hi !! I actually have 2 flower girls , they are my younger daughters they will be 5 1/2 and almost 4 by the time of the wedding . Our godson is the ring bearer . I was thinking that the older of my 2 girls could walk up in front of the younger FG and RB or she could walk behind them . I think its fine to have 2 RB , you could have the FG walk in front of the 2 boys or they could all walk together ... play around w them and see what you like best . Whatever way you decide to do it , Im sure it will be adorable !!!