Remy Ma stole the show at Hot 97's massive Summer Jam concert at MetLife Stadium .. or at least her boobs did.
Remy came running onstage for her verse of "Lean Back" but only made it a couple of steps before her right boob popped out ... momentarily.
The MC was a total pro though ... keeping on mic, while getting her girls back in line.
We'd say she didn't miss a beat, and she didn't -- but her wardrobe department might want to spend some time shopping for bras.
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