Definition of "overbust" [overbust]

• Above the bust. (adjective)

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• "But a real custom made overbust corset is an expensive thing."
• "Ladies, if you're game, you won't be disappointed. these also offer far more support for the bust (if overbust stays are made/purchased) because the shoulders and upper back are not carrying the load."
• "Here's a dumb question of my own: in vintage patterns, is the "bust" number the overbust number, or the bra size as it is in, say, slip sizing?"