Crotch Rise (front view): using a measuring tape, measure the top of where the bottoms sit in the front, through your legs to the top of the bum crack.
This measurement is typically 16-18 inches
Cup Height: using a measuring tape, run the tape along the length of the triangle starting at the top an ending at the bottom.
Cup Width: using a measuring tape, run the tape along the bottom of the triangle from the outer edge to the middle.
Hip: using a measuring tape, measure around your hips where you want your suit to sit.
Glute: using a measuring tape measure around the biggest part of your bum
Crotch Rise (back view)
Torso: using a measuring tape, run the tape around your rib cage underneath your breasts where the string for your bikini would normally sit. Pull tight to ensure the back connector will be tight enough.