Shadow Lady Boobs and Butt
This piece has actually been on this blog before, as a joint submission with a DNA² promo art by the same author where both her and Karin with DNA² were in boobs and butt poses.
That one has a larger viewpoint and shows she's apparently giving the camera the finger which is what I would do too if I was stuck in that pose.
Though with the finger cropped out, it kinda looks like she's taking a selfie.
(Cover of Shadow Lady #2, Dark Horse Comics, submitted by anonymous)