You are entirely incorrect. Her bust size is the same, and you're making something out of nothing. And anybody here can see that via the previews above. (Page 6 is page 9 in the preview.) I really enjoyed this book, too bad you're seeing things that aren't there!

So, this is a comic about (and maybe somewhat aimed at) young people ... and on the 6th page, with a close-up of her chest, we see that our "glasses-wearing, flat-chested" heroine now has an ample bosom, supposedly because gaining superhuman powers results in a "general augmentation of physiology," the other part of which is her no longer needing glasses.

So, those larger breasts are part of a healthier and more fit human body ... how? Oh, right, 'cause big tits sell comics.

Come on, Marvel.