Just saw the cover and previews, and I have to say, I think this PB seems pretty good. I really like the cover. The yellow dress in the white room makes it sorta like looking at a daisy(Which I think is what they were going for). It's really cute.
And just a note, you can't really compare Risako's PB's with Momo's too much, they're in completely different points of adolescence, in a couple of years Momoko will be an adult, and Risako will be where Momo is now
The two shouldn't be held in the same standard in terms of "appropriateness"
I have to say though, the bikini shots are a little too much for me, but she really doesn't look bad in one >_>