The easiest way to dry your baby's clothes is in a clothes dryer. A dryer is quick and keeps baby's clothing from getting stiff which can happen when air-drying garments. However, a dryer will shrink or temporarily shrink your baby's clothes because it uses high heat to dry clothing.
Seeing as baby is growing so fast and out growing clothes, you'll want to get the most wear out of each item before you'll need to move onto the next size. If the item is a baby novelty t-shirt or something you love to see your baby wear, you'll want to keep decals and screen printing looking like new and colors from fading.
To maintain longer life for your baby's clothes, you may choose to air dry certain items like t-shirts. Baby and toddler t-shirts can be re-shaped and even stretched after washing and laid flat to dry. You can soften the air dried t-shirt by putting it in the dryer on the air dry setting for 10 minutes or by rubbing the fabric against itself to remove stiffness.