Gabriel has always been a lightweight. At 3 years old he was 37 inches and 27 lbs. I just measured him at home the other day and at 3 years 4 months, he's now 38 inches 28 lbs, so he's put on 1 inch and 1 lb in the past 4 months!
Prior to this growth spurt, he'd been 27 lbs for at least 6 months.