This is one deal you dough not want to miss. 

To celebrate its 81st birthday, Krispy Kreme is offering one sweet discount: if you buy a dozen doughnuts at regular price, you can get another dozen doughnuts for $1.

The deal applies only to Original Glazed Doughnuts though, so don't get fancy with the second batch.

The doughnut shop will also roll out a Glazed Confetti Doughnut to celebrate more than eight decades of sugary bliss. The company describes the new offering as "a vanilla birthday cake-inspired dough with confetti sprinkles throughout, glazed in classic Original Glaze, and lightly topped with colorful sprinkles." Yum.

But don't wait to try the new concoction — this sweet treat is available for one week only, Friday, July 27 to Thursday, Aug. 2.