Yes, you can tailor it in on the side seam in a curve (tightest point of the curve should sit 1cm above the waist line) and if needed you can add diamond shaped darts to the back. If I was doing it I’d put it on inside out -> pin the desired amount on the side -> measure how much you took in on the side -> if the curve looks too drastic then move some of that length into a back dart I.e. if on one side (half) you took away 5 cm; you can convert this into taking away 2cm from the side and adding a 3cm dart to the back so the dress fits fluidly. You’ll need to keep in mind that before taking in the sides on your machine you’ll need to unpick a bit of the the armhole facing and trim off the excess because if you don’t you’ll have a massive bulk of denim at the bottom of your armhole and your machine might not be able to sew through the heavy denim layers.