Breast "censorship" is kinda weird.
It's as if in the US networks don't want them to have realistic definition, hence the type of boobs you just described.
Or it's like Maddie Fenton, who has just one large curve for her chest, so instead of giving her two, well-defined breasts, they opt for a single less-defined giant one.
In this show they don't have that issue, but I think cleavage would be considered too much. Hence some weirdness in a bikini scene where she's seen from the front where she's noticeably shrunk.