You can be 10 % body fat and look ripped or you could be 10 % body fat and be very skinny with very little muscle mass & very little ab definition. (nowloss.com)
They carry very little muscle mass, they have narrow shoulders, skinny arms and legs, and at the same time they can carry more than 20 % of body fat. (fitnessandpower.com)
My tummy is very soft now with little muscle tone if any. (michelle-tyler.com)