You could have posted a full photo é_è (where did you get it?)
To be honest, ofc she has a more generous breast than the others (not that hard ahah), but it's not that huge (when she's wearing their uniform or even regular clothes, you're not focused on this area you know).
They just know how to put a good spotlight on it for this kind of photos (here, they are using a little smaller bikini, it makes it look damn big, and even more with only that part on the photo xD)
She's just perfect on regular clothes.