Stuck up

Yes, as they stand they are OK.

Hi,

Are they correct?

As you know, the idiom 'stuck up' means 'conceited'. However, I don't hear or see it used much in N. America.

She's getting stuck up. OK

She's getting far too stuck up for her beauty. If you mean that her beauty is the reason that sh

Hi LiJ

Your third sentence is the most natural. Your first sentence is OK, but it seems somewhat incomplete without any context telling us the reason why she is just now becoming stuck-up.

Your second sentence sounds odd to me. Using the word 'for', I might say something like this:
She's getting far too stuck up for her own good.

EDIT:
Oops, I see

Thank you all

I see what you all mean.

LiJ