Sizing @ motherhood/destination maternity & Pea in Pod

NuggetJo

I am doing some online shopping for capris, crops etc as we are going to the Bahamas in a couple of weeks and I cannot find anything in stores. I am specifically interested in crop/ Capri slim leg pants. I am normally a size 2 and did buy maternity jeans from Target (Liz Lange) that were also a size 2 and fit great. The online sizing always scares me as the size small says size 4/6. Has anyone ordered from these stores and do you have any advice on sizing? I am 5ft 3 and weigh 121lbs right now. I still want to look stylish :-)