I have been ordering to canada for years. It's from China... not gonna be the best material but that's the price you pay when you order a $10 dress.
The best way to approach aliexpress is to read the reviews on the product u want and even better is some people posts real pics when they receive it which helps. They will tell you to buy a size up or stay the same... also helpful.
I also find downloading the app is great because I can keep track of my orders.
It's basic buyer beware and do your reading on reviews. Hope this helps