If you end up with pants that aren't slim, it is pretty easy to skinny up the legs. Have your DS put on the pants inside out and pin up the inseam, with the pins going the long way. Start a bit down from the crotch and taper out so you don't get mixed up with any flat felled seams. Stitch down the pin line to take them in and trim off the excess fabric. (Try them on first before you trim any fabric). I wouldn't buy new pants to do this, but I would with hand-me-downs or thrift store finds. I did this with a pair of capris I bought for our trip to Costa Rica. I also cut off thrift store jeans and made shorts out of them, as Carol suggests--January isn't the time to shop for shorts in northern Idaho! (Or even southern Idaho, LOL).