Kelly Clarkson In A.Isle 12

4/23/2007 1:15 PM PDT

Kelly Clarkson in A.Isle 12

An unglammed Kelly Clarkson perused the video aisles of a Best Buy in West Hollywood on Friday. Even Grammy winners love a bargain!

The original "American Idol" champ picked up tons of DVDs, as well as a copy of the electric guitar simulation video game, Guitar Hero 2.

Apparently, "Since U Been Gone" wasn't the only time Kelly has played a rock star!