Whoah there Nicki Minaj, you might want to start keeping those puppies on a tighter leash!

The rapper and R&B star has been treating her followers on Instagram to some rather chesty selfies in which she looks to be just millimetres from a nip-slip.

Minaj was posting from behind the scenes at long-running US TV show Saturday Night Live, where she was rehearsing in advance of a guest slot this evening.

Taking a break from the dress rehearsals at Studio 8H in NYC, she wrote: "SNL REHEARSALS R GIVING ME LIFE. WATCH TMRW"

We imagine that quite a few people will be watching if she's planning on wearing the same outfit!