IT IS FULLY LINED WITH AN INBUILT BRA HOWEVER I DID WEAR A BRA AS I'M FULLY BUSTED. NO IDEA OF ORIGINAL COST AS MY HUSBAND CHOSE AND BOUGHT IT (I CHOSE HIS OUTFIT). I WORE THIS FOR TWO HOURS MAXIMUM TO RESAY OUR VOWS WE WERE ON OUR OWN AT GRETNA GREEN IT WAS BOUGHT FROM DARCY BRIDAL IN NEWCASTLE UPON TYNE.