Cute looks on them.

@Background Pony #D4E1  
I think more of:  
Twilight: Wheein  
Reasons?: Playful puppy. Sometimes gets serious  
Solar: Fluttershy  
Reasons?: Has soft and delicate voice  
Moonbyul: Rainbow Dash  
Reasons?: Byulie is known as cocky. Also has wonderful raspy voice when she sings or raps. Just like Rainbow Dash.  
Rarity: Hwasa  
Reasons?: Elegant and sexy woman. Just like Rarity.

@Background Pony #78E2  
Sorry I meant to reply to your comment.

I see them more like this:
 
Sunset Shimmer-Solar(Powerful vocals, great leader)  
Pinkie Pie-Moonbyul(Main Rapper, quirky sometimes)  
Fluttershy-Wheein(Child like tendencies, just plain adorable!)  
Rarity-Hwasa(Full blown confidence, sexy 99% of the time).

[Pinkie Pie]  
If I were to describe myself  
[Sunset Shimmer]  
I’m a confident girl  
[Rarity]  
To put it in words, a woman of feeling  
[Fluttershy]  
(My babe)  
[Pinkie Pie]  
If you think you can do it, you can follow me  
[Rarity]  
(You can)  
[Pinkie Pie]  
Follow me, follow me  
Follow me-e ay ay  
[Sunset Shimmer]  
Makeup is light, ‘cause I’m lazy  
I won’t show skin, no need to do that  
[Pinkie Pie]  
It’s strange, I’m a bit unique  
I don’t like ordinary things  
I thank my parents for this side of me  
[Rarity]  
Me me 4 with Sun  
Stop thinking, my mind is high class  
Don’t be shy, you’re Vogue  
Hello bonjour nǐhǎo annyeong  
Just like how each country has its own charm  
[Sunset Shimmer]  
If I were to describe myself  
[Rarity]  
Whenever I wear sleeveless shirts  
It becomes summer, ([everyone except Rarity]Introduce myself!) I love you. If I were to describe myself  
[Sunset Shimmer]  
I’m a confident girl  
[Rarity]  
To put it in words, a woman of feeling  
[Fluttershy]  
(My babe)  
[Pinkie Pie]  
If you think you can do it, you can follow me  
[Rarity]  
(You can)  
[Pinkie Pie]  
Follow me, follow me  
Follow me-e ay ay  
Yes I am, [Sunset/Rarity] if I were to describe myself  
Yes I am,  
[Rarity]  
I’m very cheeky  
I like comfort ‘cause that’s just me  
I won’t sugarcoat, I can’t hide it  
[Sunset Shimmer]  
I’m cheeky, I don’t care  
You don’t know me  
[Rarity]  
I just do what I wanna do  
[Fluttershy]  
My name is Fluttershy  
This is just my taste  
So don’t be too sensitive  
My complex is nothing  
Slacks, shirts, loafers  
With a classic style  
I express myself, my baby  
You still try to take me down  
Take off the blind  
Drive, get in my car  
Now, now, if I were to describe myself  
[Rarity]  
I’m a confident girl  
[Pinkie Pie]  
To put it in words, a girl of feeling  
[Fluttershy]  
(My babe)  
[Sunset Shimmer]  
If you think you can do it, you can follow me  
[Rarity]  
(You can)  
[Pinkie Pie]  
Follow me, follow me  
Follow me-e ay ay  
Yes I am, [Sunset/Rarity] if I were to describe myself  
Yes I am [Pinkie Pie]follow me-e ay ay  
Yes I am, [Sunset/Rarity] if I were to describe myself  
Yes I am,  
[Pinkie Pie]  
My cheeks are chubby. My face is more round than V-line  
I like it  
It’s my own, some special thing  
[Fluttershy]  
Instead of double eyelids  
I like my mono eyelids  
When I smile, my Indian dimples  
and wrinkles on my nose  
I compliment them  
[Pinkie/Rarity] If I were to describe myself  
[Pinkie/Rarity] If I were to describe myself  
[Sunset Shimmer]  
I’m very chic  
[Everyone]  
If I were to describe myself  
If I were to describe myself  
[Sunset Shimmer]  
Her, her, her ([all girls]Introduce myself!)  
If I were to describe myself  
I’m a confident girl  
[Rarity]  
To put it in words, a girl of feeling  
[Pinkie Pie]  
If you think you can do it, you can follow me  
[Rarity]  
(You can)  
[Pinkie Pie]  
Follow me, follow me  
Follow me-e ay ay  
Yes I am, [Sunset/Rarity] if I were to describe myself  
Yes I am [Pinkie Pie]follow me follow follow follow me  
Yes I am,  
[Sunset Shimmer]  
if I were to describe myself  
[Everyone]  
Yes I am,  
[Rarity]  
I’m very cheeky

@ImperfectXIII  
That’s actually the outfits what Mamamoo wore in “Yes I am” music video

@SanashyFan  
Only Sunset and Rarity are correct. Personally I think Rainbow fits more in Byul role than Fluttershy does.

Solar Pie  
WheeSun  
Rarisa&  
FlutterByul!!
 
I love this!

That’s some cute styling they got going on.

Ooooh LOVE these outfits! <3