I knit a sweater for Henry, the son of a former co-worker, a few years ago when he turned one. I don't have much experience with baby sweater sizes, and it was a bit big for a one year old. Maybe "a bit big" is an understatement. Henry wore his sweater to his first day of pre-school! He's definitely stylin'.
I don't even remember what I used for the base pattern. I think it was a free ravelry download for a plain toddler's vest and I embellished it with a simple cable down the front.