The Catsuit has two zipper heads, which can be pulled back and forth, with the back zipper pulled down for open crotch style.   
 
Size Chart:
 
SIZE XS/S - UK6/UK8
Bust: 74-80cm
Waist: 58-66cm
Hips: 86-94cm
Catsuit Lenght: 140cm
 
SIZE M/L - UK10/UK12
Bust: 78-86cm
Waist: 66-74cm
Hips: 90-98cm
Catsuit Lenght: 145cm 
 
SIZE XL/2XL - UK14/UK16
Bust: 84-92cm
Waist: 74-82cm
Hips: 92-100cm
Catsuit Lenght: 150cm
 
SIZE 3XL - UK18
Bust: 92-100cm
Waist: 78-86cm
Hips: 98-106cm
Catsuit Lenght: 155cm