One of the best things about the holidays are the post-holiday sales! And today’s Groupon is an even better way to take advantage of those post-holiday sales!

Today through December 24th Groupon is offering a $20 voucher to Old Navy for only $10! The voucher can be used as early as tomorrow, December 22, through January 28, 2012. This is perfect for a last minute gift or for those post holiday sales. The voucher can be used in-store only and cannot be combined with other offers or Rewards Card. The $10 you paid for doesn’t expire but the extra $10 that comes with the Groupon expires on January 28th.

This deal may not show up on everyone’s local Groupon page. It’s not on the DC page, but I found it on the Athens, Georgia page. So just go to the top and change your location. You can use the voucher at any Old Navy location in the US.

If you are interested I would suggest jumping on this deal right away because quantities are limited. If you’re not a member of Groupon, you can sign up for free here. Groupon is the original and most popular daily deal site that offers local and national deals for restaurants, events, outings, spa treatments, and all kinds of lovely experiences and products, all at amazing discounts (up to 70% off!). I have purchased and used many Groupons and have always been pleased with them.

And the cherry on top of this deal is that if you purchase it through Memolink you can get 80 points per dollar spent at Groupon! That’s 800 points closer to a gift card from your favorite store! Don’t know what Memolink is? You can read my review here.