Let Rose McGowan serve as a lesson to you — the only reason you should ever tie a sweatshirt around your waist is if you’re a frumpy mom trying to camouflage a huge ass or it’s 1992, and the only reason you should have hair that color is if you’re a vintage Barbie styling head or part butternut squash.

And for the record, you don’t have to look like complete crap when you hit the gym. You can do yoga pants with contrasting waistline here or in a bright color here, and instead of a ratty sleeveless shirt broadcasting your personal stance on gay marriage, try pairing sexy tank from Spanx Active with a hot pink sports bra from Miracle Makers.

Oddly rectangular Rose in L.A. yesterday: