All of these are wrong except for Rainbow Dash.  

Twilight’s the one on the left.

@Background Pony #3B6B  
meeeeeeeeeeeee

@Background Pony #3B6B  

 
@Crystalis  

 
And you have my bow.

@Background Pony #3B6B  
me

Who even buys this kind of shit?

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@Chaos_Master  
Sounds good to me

For me (comparing these silhouettes to the new images on the EG minis beach box sets)  
-Rainbow Dash (you can see the pants silhouette as you can see in the preview images for the youtube series)  
-Applejack (you can recognize the cowgirl boots and skirt style on her minis beach box set)  
-Twilight  
-Pinkie (for the frilly skirt silhouette from the preview images for the youtube series)  
-Rarity  
-Fluttershy (for the shoes laces that go up her legs as you can see on her minis beach box set)  
-Sunset (her shoes seems to have studs matching with the studs on her jacket as you can see on her minis beach box set)
 
Between Twilight and Rarity, for me the one on the left is Twilight and on the right is Rarity.  
Check the preview image for the youtube series and you can see that Rarity has a tighter skirt than twilight.
 
This is only my opinion, of course.

@E-L-G  
Just realized these ones must be articulated, considering the poses.

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@Background Pony #BE8E  
Agreed.
 
Also, who else is hype???? Do you think we’re getting the new designs from the animated series?? I’m so glad they’re bringing back the fashion dolls!!

I think Applejack and Fluttershy are swapped. I mean, look at the one who is suppose to be fluttershy,she has AJ’s boots and hairstyle

All seven of them are Starlight Glimmer.

@Crystalis  

 
The figure that says Rainbow Dash is the only one that has no boots, shoes or skirts.

no, clearly Rainbow Dash and Fluttershy should be reversed