I’ve always had large arms which are out of proportion with my size 12 frame. CoolSculpting looks like an easier option but am I best to go for liposuction?

CoolSculpting absolutely can help with large arms but you need an expert practitioner to assess you and help you decide what line of treatment would be best for you. It might be that a treatment like BodyTite or liposuction would help more, but that’s a decision you need to make with expert guidance.