Hello, I'm new to the hobby but it is my understanding that the SD13 just refers to an overall size of doll (58-62cm I believe) and that the exact dimensions between various brands and even styles of bodies withing the same brand can be different.
I googled Doll Family A-Line and found the following dimensions:
Measurements:
-Height: 58cm
-Head Circumference: 21cm
-Neck Circumference: 8.8cm
-Shoulder Width: 11.5cm
-Arm Length: 20cm
-Chest Circumference: 25.2cm
-Waist Circumference: 16.8cm
-Hip Circumference: 25cm
-Back Length: 13cm
-Thigh Circumference: 14cm
-Leg Length: 32cm
-Ankle Circumference: 7.8cm
-Foot Length: 7.2cm
My BJD is a Doll Leaves Doris who is also the same height but her Shoulder Width is 11cm, her Waist is 16.5cm and her Hips are 25cm.
From what I've been told unless the chest is very large most clothes are ok although trousers can be a problem with different leg lengths.
Shoes are another matter that I'm trying to get my head around at the moment
Hope this helps but I am most certainly open to correction if I've got it wrong