I originally ordered a M based on the sizing chart but I have a 90cm bust, 70cm waist and 110cm hips and I was concerned this set overall would be too small based on the chart. I had to return the M and order a S as per my usual sizing so I recommend going with your usual size or if between sizes, size down. I ended up keeping the top in M however ordered another black set and bought S. You could wears this without a bra for light exercise as long as it's tight enough on you. I also ordered my regular size in the bra, S. I LOVE the set and just ordered in black too. Buy all of the pieces - they're amazing
M