Why does my bunny lick me?

My bunny April ( we call her 'Ratty' cuz she look's like a rat. She is a mini rex Chincilla colour) likes to lick me and my moms hands, face, arms and in summer the legs. Why does she do this? Is it beacause when she licks me on the face and lips i kiss her? Is it beacause she is wered? Do lots of bunnys do this?