OQQWomen's 2 Piece Crop Top Ribbed Seamless Workout Exercise Long Sleeve Crop Tops

I bought 4 of these shirts, I love 2 out of 4 I want to return the other two colors but they were in the separate packages do I have to return all ?

bust size is 35", what size should i get?

Is the top fitted for girls with bigger chests?

They haven't taken my money out of my account yet and I ordered it a few days ago. Is that normal?