I have worn this dress in the 70's a few times to a friend wedding and it has been sitting in the wardrobe all this time since.

It can no longer fit me

The label says size 12 but it is smaller than a 12 more a size 8/10 if your measurements are as stated below

Please note the waist size on the photograph

Waist is 24 inches

Bust is approximately  32/34 inches