I have 3 assistants - 2 of them are girls. Also my hair/makeup artist is a girl
I've had models comment about how comfy they felt on our shoots with so many girls around. Often I'll be in another room and I'll hear the "girls" laughing and cutting up with each other in another room.
I also present myself as very non-threatening. It's important to me that the models are as comfy as they can be. I make a habit of asking them throughout the day if everything is ok? If I can get them something? Their comfort level is important to me and to the success of the shoot!