Britney Spears Nips Out Down Under - Pictures

Britney Spears knows the secret to packing light – just leave your bras at home.

The singer's nipples were clearly pointing the way under her tight t-shirt as Britney surfaced in Perth, Western Australia, where she will kick off the latest leg of her Circus tour tonight.

The Womaniser star smiled and waved to photographers, apparently oblivious to her unsupported cleavage.

Britney announced her arrival down under on her Twitter page, writing: "Longest flight ever but we had a great time. Really cool plane and the V staff took great care of us. So excited to be here!"

We can tell.