washing wool jumpers

[Paul Henry]

I have several jumpers / sweaters made of cotton or cotton and linen that have stretched. Can anyone recommend a method of controlled shrinkage to restore their shape?

I've had exactly the same problem, they seem to be just about ok, immediately after washing,but they do seem to grow with wearing.

I normally wash in a hot(ish) cycle in a machine, drying flat.
If any one has a magic solution , I'll be grateful to hear it as well