I found these cheapo dresses at Walmart yesterday and thought I'd do a review here for anyone who is interested. They were about $3 each (Alaska prices; your prices will probably be lower) and they each came with a purse or shoes. They don't have that nasty stretch material on the back like the cheap Barbie dresses, but they are quite short as you can see. Like almost Hoochie short !
Starting from the left, is a gray bodysuit and skirt on a Barbie Fashionista body. The shoes were also included and they fit well. However the body suit is really tight lengthwise, which I suppose means the actual Sparkle Girlz dolls must have shorter torsos than Barbie. Width is fine tho.
In the middle is my Hojoo Freya in a knit and sequined lace dress with a purse. It's a bit too wide around the torso same as the Barbie dresses but less noticeable because of the knit fabric. Much more modest skirt length on her.
Far right is a Mattel Disney with bendable knees. Again, a pretty good fit around, but short, short, short! I will probably end up adapting them for Freya rather than keeping them on any of my Barbies. With a little nip & tuck, they might work on Monster Highs too.