Nicki Minaj is promoting her new single with her bumbum out of a bubble bath

Nicki Minaj is a queen of self promotion.
The Chun Li rapper posted a shining snap of herself by means of Instagram to advertise her most recent single on Sunday.

With her perky derriere looking out of an air pocket shower, the 35-year-old subtitled the pic: 'And when he eat the (treat emoticon) he got #GoodForm ft Lil Wayne THURSDAY