i think there are a lot of women who want really big boobs, but don't realize just how big the implants have to be to get the results they are looking for. they get implants in the 500 to 600 range, then it's only 1 or 2 months until "They're not big enough."
i went through this exact scenario with my last serious girlfriend, who had always wanted really big tits, but when it came to surgery, settled on a pair of 650s. both me and the surgeon tried to talk her out of that, and encouraged her to just go directly to 800. like clockwork, it was only 2 or 3 months after full recovery from surgery and she was already complaining to me in private that they weren't big enough.
speaking of "going bigger", teanna kai's new boobs are gorgeous. i wish all models would upsize like that. let's just make it a regular part of the process. every 5 years, go bigger. LOL.