Jennifer Lopez was killing it “on the floor” at her new “All I Have” Vegas show on Sunday night when the unthinkable happened: J.Lo’s flawless body was too spectacular to contain itself, and her dazzling jumpsuit split open on the rear end.

Before leaving the stage, the "Waiting for Tonight" singer, 46, thanked the crowd, then took a bow — which is when her body-conscious Michael Costello costume ripped at her derriere!

Ain't no thing for Lopez! Ever the professional, the Shades of Blue actress continued her final bow, despite the wardrobe malfunction.

Check out the video below

-