stretch marks...oh how i hate them

i guess its natures way of telling me im getting older. im starting to get them on my boobs. i noticed today as i was sitting in the light of the window reading a book. they are starting to come in at the sides. thank god they arent at the top like some ppl it looks like a bear attacked them and they have the scars to show it. i guess i better stock up on the cocoa butter and start rubbing it in..maybe they'll go away.
does anyone have any ideas on how to stop stretch marks?