Is it safe to make purchases from Aliexpress?

I'm looking for a prom dress and I found a dress that I really like online. http://www.aliexpress.com/item/Free-Shipping-Party-Dress-Formal-Evening-Dress-Prom-Dress-Sheath-Mid-Calf-Lace-Cap-Sleeve-Free/530167100.html However this is my first time purchasing online and off this website, Aliepress. My... show more I'm looking for a prom dress and I found a dress that I really like online.

http://www.aliexpress.com/item/Free-Shipping-Party-Dress-Formal-Evening-Dress-Prom-Dress-Sheath-Mid-Calf-Lace-Cap-Sleeve-Free/530167100.html

However this is my first time purchasing online and off this website, Aliepress. My mother does not want to buy from the website because she is not familiar with the name LouisVuigon. I would like to know if the clothing is good quality, would I get my money worths. PLEASE HELP!
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