Queen Mary 2 at Garden Island Navy Base as QE2 arrives in Sydney Harbour, taken by Colin Alexander.

Queen Elizabeth 2 passes the Opera House in Sydney Harbour, photo taken by Jim Bond.

Queen Mary 2 in Sydney Harbour, taken by Jim Bond. You can send your photos of the two liners to yourpics@bbc.co.uk.

Chris Henderson's photo as QM2 arrives at sunrise in Sydney Harbour.

Judy Beard took this picture from the Sydney Harbour Bridge.

A flotilla of boats meets the QE2 in Sydney Harbour, photo taken by Chris Henderson.

Ian Priestley popped out of his office to take this photo of the Queen Mary 2 in Sydney Harbour.

Katie Connolly took this photo of the Queen Mary 2 from her office window in Sydney. "The whole city is abuzz with the ship's arrival & the arrival of the QE2", she says.

Tracey de Vere White took this photo of fireworks on the Queen Mary 2 as it sailed from Southampton in 2006.

Chris Henderson took this photo of the QM2 with firework display in Sydney Harbour.

Fireworks over Sydney Harbour above Queen Elizabeth 2, taken by Jim Bond.