Don't get too caught up in jamming keywords into your titles. Chances are your competitors are already doing this, so use the opportunity to stand out and grab the users' attention; give them a reason to click your result over the other ~9 on the page.
Page titles should be compelling so getting your keyword(s) in there is great, but try to avoid the clunk old [keyword] [keyword] page title style. Sometimes it makes sense and is about all you can really do but if you can avoid it, do so.
I don't agree that you need to have the word Australia in the title either, Google looks at plenty of factors to determine what country you're in so no need to take up those precious pixels in your title with a long, redundant word!
There are a couple of Whiteboard Fridays that cover this general topic which you might find helpful:
- Headline Writing and Title Tag SEO in a Clickbait World
- Keyword Targeting, Density, and Cannibalization
I'd give you an example of a strong title but I just realised how little I know about wedding dresses! Basically, it should be something like Amelie Wedding Dress - [Something compelling; what do they care about?].
Remember, don't talk about yourself or your product, talk about the benefits these customers care about. If they're sold online, ship fast and this is your strongest selling point, maybe something like Amelie Wedding Dresses - Easy Online Store, Shipped in 48hrs!