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The process that occurs when a flat-chested girl you once knew later blossoms into a large natural breasted woman.
Chris: Hey, you remember Amanda from middle school?
Gregg: You mean, the flat-chested one?
Chris: Yea, look at her now.
Gregg: Damn! She must've went through a breastamorphosis.
by GTab January 04, 2006
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