Cute hats, shoes, and small props from their rooms are great. A little color is always welcome. If you don’t enjoy very colorful clothing, a flower or cute hat can be just that splash of color that makes a photo really pop. I would avoid large logos and writing on clothing. If you’re not sure what to wear, you can always start with simple jeans and a shirt, and we can add from there.
For older babies, the best time for photos is when they first start sitting by themselves. At this point, babies usual smile more and react to their environment. That is usually the time when babies start to get those chubby little cheeks, and who doesn't love that?