So some B-Roll for Suicide Squad has hit the net overnight. If you don't know what that is, it is basically just behind the scenes footage, with little sound of the crew filming scenes.
What's interesting in here, (actually a fair portion of it is interesting) is Harley. While it doesn't appear that she will be donning it, it appears in two shots here. One where Joker is laying on the floor surrounded by weapons, and the other where she seems to be going through her stuff.
Fair spoiler warning, you will see a bunch of shots from the movie being filmed, so viewer discretion.
Give it a look here. You can catch them at 3:11 and 4:39: