Question: what clothes should a 1 year old sleep in?
Answer: When dressing your newborn for bed, follow this rule of thumb: dress the infant in one additional layer than what you'd be comfortable wearing at night in that room. Consider a onesie, sleep sack, or lightweight swaddle in warmer months. In colder months, opt for a long-sleeved onesie or a heavier sleepsack or swaddle.