I dont know if britneys boobs are real or not (though I'd like to personaly find out), I knew a girl in highschool who went from small boobies to having one of the largest racks in school over the summer, so it is possible.
of course theyre gonna pick the 2 extremeties, 1 which looks likre her tits r huge, and 1 which looks like they're tiny, but who cares, theres heaps of hotter chix whos music/skiin/wateva is tons betta than hers