I think That is her hairstyle in Twinkle.

That is one of the most basic hairstyles. If I were to try to believe that she copied Park Bom, then I'd have to also believe that Park Bom copied Rihanna link Bella Thorne link and a whole lot of people all over the world. That just doesn't make sense.

Basically, it's a very common hairstyle. Women have worn their hair like that for much longer than either of those girls have been alive, so I don't really think that anyone could argue that Tiffany copied it.

You could say that they look sort of similar, but Tiffany's hair is thicker, so it looks quite different to me.

why would she? Sera from nine muses also has this hairstyle

I agree with Hazella1

Yes Fanny is always trying to copy Park Bom's red hair.
This is KPOP, and I've read that some stupid sone says about Rihanna. Bom's red hair is the first one in Kpop girl group and SM's stylist stucks with Tiff, and now Tiff even copies Bom's expression. What a loser!
About Rania? They've just debuted, and snsd debuted 5 years ago and before 2NE1 2 years. Since 2NE1's debut they had copied 2NE1's style many times.

Funny cuz much girls had had red hair xDDD