It only appears to do this while wearing Female Orion costume pieces, and... it might be hard to see in the screenshot, but there's a spot just under the belt that you can actuall see through the character. I don't know if this also affects Mk XII and Adapted, but... yea... there are so many ways this can go.
Originally Posted by Yang Xiao Long
At least you two have something that drives you. I've just always, gone with the flow, you know.