I ask one of my girls to wear a certain outfit for me one day a week. It's a great feeling when I wake up that morning & know she's dressing to please me.
She's not a member of this forum & can't speak for herself, but she seems to enjoy doing it. The knowledge that she's doing it to please me, & being aware that 'I know what she's wearing next to her skin' seem to be part of the appeal.