Hi! I want to buy some Uniglo merino jumpers online and would love to get the sizing right first time and not have to go through the returns process. I'm a size 6-8 with a small chest. Could Uniglo merino fans give me some advice on which size to go for please? Also, thoughts on whether these look good skintight or with a bit of room would also be appreciated. Thanks so much. 😊