Heh, so I'm playing catch up on the last few DrawLAAHHH topics. Tonight (11/11/11) was Draw Night at Earth 638 and the topic of the evening was "DC Comics", so I took the opportunity to do the Power Girl piece I missed out on.
The original drawing I did at the comic store needed a bit of tweaking, so after making those adjustments (okay okay, I had to make her boobs bigger!), here she is. Click for the full-sized pic.