Sizes of leotards:

Length of a suit from shoulder	Length of a sleeve, from armpit tilllower	Breast-width measured from armpit to armpit
till crotch seam, unstretched:	part of the wrist, unstretched:	across the frontside of the body, unstretched:
Size 128 --> 51 cm	Size 128 --> 37 cm	Size 128 --> 25 cm
Size 140 --> 54 cm	Size 140 --> 39 cm	Size 140 --> 27 cm
Size 152 --> 58 cm	Size 152 --> 41 cm	Size 152 --> 29 cm
Size 164 --> 61 cm	Size 164 --> 43 cm	Size 164 --> 32 cm
Size S    --> 65 cm	Size S    --> 45 cm	Size S    -->  34cm
Size M   --> 69 cm	Size M   --> 47 cm	Size M   --> 36 cm
Size L    --> 73 cm	Size L    --> 49 cm	Size L   --> 38 cm