I deliberately did this pattern with loose measurements on the waist area so I can style it differently, like wearing a belt or a sash and you don't have to have the perfect figure to wear it.
Proceed with measuring your own measurements: Click Here for Reference
1. Your Shoulder (the placement of the straps on your shoulder)
* You can make the straps closer to your neck and hence, the armhole area a little bigger as you wish but measure properly before you cut your cloth.
2. Your Bust Point
3. Bust Measurement
You can even skip the darts on the back (optional) if u prefer it to be even more loose fitting.
Wear it with a belt or let it loose.