i’m a size M and purchase a size L . it was too big.The jumpsuit is true to size

I was surprised by the material on this jumpsuit, it’s not nice at all. The front fit me okay and the back zipped up but it didn’t fit well. Had gaping in the back and overall it’s just wasn’t flattering. I have put it as true to size because it zipped up and “fit” but I’d say the sizing and shape is off. Wouldn’t recommend I am 36-30-49 and 36g cup size usually a large in stretchy items and xl otherwise