We all know Amanda Conner is the artistic draw when it comes to the new POWER GIRL ongoing series, which pairs her with the writing team of Justin Gray and Jimmy Palmiotti. But the series also shows off some nifty variant covers -- the first two, from Adam Hughes are out there, but here are two more, for issues #3 and 4, this time from GOTHAM CITY SIRENS artist Guillem March. Nice, huh?