Heidi Montag -- Oops, My Breasts Fell Out!

Heidi Montag struggled to contain herself in Costa Rica last week -- when the reality star's bikini top happened to collapse under the pressure of a G-cup-sized breast right in front of the cameras.
Heidi Montag struggled to contain herself in Costa Rica last week -- when the reality star's bikini top happened to collapse under the pressure of a G-cup-sized breast right in front of the cameras.

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Heidi Montag -- Oops, My Breasts Fell Out!

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heidi-montag-boobs-2010, Heidi Montag filming new scenes fo…