Maybe she should show as much as possible without actual nipple showing. Would be pretty good.
That would be awesome, though remember, bras are what generate most of the cleavage. I guess it's possible though.
Showing tons of cleavage without showing the nipple would be awesome, and possible.
Ooh ooh, you should have her wear short shorts or a skirt with no underwear. Then she has to be real careful with staircases and the such.