Top definition
The smallest possible breast size.

Measuring less than 1 inch difference between the bust and the below bust (band) measurments.
aa cup is basically a training bra.
by asd324 May 06, 2009
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2
Part of the Itty Bitty Tittie Committee
Did you hear about Steph, Cam and Nash? We thought they were guys with there AA Cups
by mattyraw October 01, 2016
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