Lululemon like Luxtreme fabric dress size medium black

This dress I bought from Amazon, it has no name brand on it. It is a size medium with built-in bra and padding, it is black, there are no shorts underneath, the fabric feels exactly like Lululemon‘s Luxtreme fabric, this is definitely a sporty style dress. It is brand new, I bought it from the American website so it wasn’t returnable or it was, but I would have to pay a fee which I didn’t wanna do, it is too big for me.