Here some more ideas and do it like Ariana's, it's not so hard as you think. With a little imagination you can come realy far. If you see your favo celeb rocking a dress from Calvin Klein, as a example. Your probably thinking I CAN'T BUY SUCH A EXPENSIVE CALVIN KLEIN DRESS! But you can buy a cheaper look-a-like. ; )
So use your fantasy and be creative!