Are there any shops open in Sydney on Christmas day?

I am a Christmas fanatic and love researching all things to do with the subject. I found the following posts that may be helpful.

Christmas lights - best streets in Sydney?
www.homely.com.au/sydney-greater-new-south-wales/questions/christmas-lights--best-streets-in-sydney

Where can you buy real Christmas trees in Sydney?
www.homely.com.au/sydney-greater-new-south-wales/questions/where-can-you-buy-real-christmas-trees-in-sydney

What are some quirky and unusual Christmas gift ideas in Sydney?www.homely.com.au/sydney-greater-new-south-wales/questions/what-are-some-quirky-and-unusual-christmas-gift-ideas-in-syd

Are there any other Christmas window displays in Sydney other than Myer and David Jones?
www.homely.com.au/sydney-greater-new-south-wales/questions/are-there-any-other-christmas-window-displays-in-sydney-othe#reply-259494

Where is the Sydney Christmas parade?
www.homely.com.au/sydney-greater-new-south-wales/questions/where-is-the-sydney-christmas-parade

Does Sydney have miniature railways?
www.homely.com.au/sydney-greater-new-south-wales/questions/does-sydney-have-miniature-railways

Where to eat this Christmas in Sydney
www.homely.com.au/sydney-greater-new-south-wales/questions/where-to-eat-this-christmas-in-sydney#question

Best places to have Christmas dinner in Sydney
www.homely.com.au/sydney-greater-new-south-wales/questions/best-places-to-have-christmas-dinner-in-sydney#question

Here is where Carols by Candlelight will be this year in Sydney
www.homely.com.au/sydney-greater-new-south-wales/questions/here-is-where-carols-by-candlelight-will-be-this-year-in-syd#question

What's happening this Christmas in Sydney?
www.homely.com.au/sydney-greater-new-south-wales/questions/whats-happening-this-christmas-in-sydney#question

What are the best Christmas recipes?
www.homely.com.au/sydney-greater-new-south-wales/questions/what-are-the-best-christmas-recipes-4#reply-259511