Up to what age do you feel it's ok to bring a girl into the men's locker room at a pool?

I actually feel it's needed for girls a bit longer than boys, since they tend to have a harder time getting in and out of their swimsuits. When I took my kids swimming, I brought my sons into the locker room with me until about age five. When my husband took the kids swimming, the girls went into the locker room with him until about age six or seven