the size might not have been true to size, you could try a blocking method?
1
Anonymous3w
bigger sweater
1
Anonymous#13w
What’s a blocking method?
1
AnonymousOP3w
it’s what fabric artists use to stretch the material to maintain structure. it’s pretty easy. if you know the fabric material of the sweater, you can google blocking methods for it. it’s usually some form of washing and stretching