SimluLightweight Cardigans for Women Reg and Plus Size Light Cardigans for Women Summer Long Sleeves

I can only wash in hot water, what will that do to the sweater? Also, sometimes I wear an xl and sometimes a 1X is this true to size?

Is this true to size?

2 questions: I'm a size 10pants but 36DDD X-lg shirts. What size? Also, does this wrinkle easily? Planning on packing it. I'm 5'6".

is this jacket tight around the upper arms?