Anna and Zu LOVE to be groomed.
Whenever I want either of them, all I have to do is tap on the floor with one of the metal combs I use and they both come running. (I usually groom them in the bathroom, as the water, cotton balls and all the other stuff I need is in there.)
Here's some pictures from last weekend's session.
Zuzu came first and within 30 seconds, Anna ran in and tried to take over.
Notice how close she is sitting to Zuzu, trying to get me to groom her: