Stapleton finished off the fierce look with perfectly defined, ruby-red lips.

Step 12: Line your lips with M.A.C. Pro Longwear Lip Pencil, $20, in He Said She Said, a brick red shade. Fill them in completely, as if you were using lipstick.

Step 13: Top off the liner with M.A.C. Vamplify Lipglass, $20, in Tease Don't Touch. To make your lips extra pouty, take a powder that is a couple shades darker than your skin tone and dust it under your bottom lip.

Bring together your #squad, and you're ready to take down your enemies (or, you know, be the most badass b*tches at the Halloween party). And remember: Though Band-Aids don't fix bullet holes, they can patch up your feet after a night masquerading as a superhero in sky-high stilettos.

Makeup: M.A.C. Cosmetics Senior Artist John Stapleton
Jewelry: Rachel Katz Triangle Earrings