No matter how trim your cloth diapers are, there is little chance they will ever be as trim as a disposable - close, but a bit bulkier. The trimest options that come to mind would probably be a pocket diaper stuffed with hemp - of our selection I would say the Hugga Buns Ultra pocket diaper and the Thirsties hemp insert, either that or maybe the BumGenius AIO without a doubler. Those of us that use extra doublers, or large prefolds and covers are used to that cute padded bum! I have gotten questions about the development of a baby's hips with that added bulk between the legs pushing them apart more, this is a myth and there is simply no truth to it. Your baby's hips will develop just fine! What do you think babies wore before the invention of the disposable diaper anyway?
People often ask us if the added bulk under clothing makes shopping more challenging. With my daughter, I don't really think its been that much of an issue, except maybe with onesies which we really only used for the first few months given that she was born in January and I was trying to keep her warm! I don't think she ever wore the 0-3 month and only wore the 3-6 month for a very short time - I learned quickly to size up. They also make a snap extender for onesies since its really the crotch and bum area that needs the extra room when your babe wears cloth. I don't have personal experience using them, but have heard rave reviews. With sleepers and other stretchy cotton items usually worn by newborns, there is usually plenty of extra room for the cloth.
Now that my daughter is older (2 1/2) and in the 80-90th percentile for both height and weight, I generally only buy pants with some element of stretch - there are actually few things I have founds that don't stretch to some degree. If your child is very slender it probably won't even be an issue as I have plenty of friends with slender children that wear jeans and cords over their cloth with no problem. There is such a large variety of options available for children's clothes these days - I find Target carries the best fitting stretch bottoms with great variety of colors and prints. Our family has been using cloth from day one, so for us its a no-brainer. We do have to remind people around birthdays and holidays that gifts of bottoms do need to be stretchy as we do have a little extra padding in that area! If you are changing over from disposable to cloth, there is a chance you may find a few of your child's tighter items with no give to be too snug - a small price to pay - you will definitely save more money in the long run!
I love to see a cute little padded cloth bum - there is nothing wrong with a little added "booty"!
Have a great week everyone and happy diapering!