Dressing dolls may be the most fun part of having a reborn doll. I change my dolls depending on the weather, the time of day and if we're going to go outside.
I treat them like real babies. If it's too hot for a sweater, then they should be in cool summer clothes as well. However, the body type of your reborn doll does make a difference. I often have to put my dolls in a onesie first to cover up the should joints. And they usually don't look good in bathing suits unless you can find a rash guard small enough for a newborn.
Hats and gloves and booties are fun too. Not to mention all the equipment. Just like a real baby, I use strollers, car seats and carriers.
This is a place to indulge and have some fun!