Jonathan and I measured the boys last night so we could see how tall they were. Here are their current heights:
Will is 47 inches tall.
Drew is 40 1/2 inches tall — taller than Daddy was at age 4.
Luke is either 35 3/8 inches tall or 36 3/8 inches tall. The nurse said the higher measurement, but I think she forgot to subtract an inch (She started from the 1 inch mark.).
Either way, the boys are all really growing — taller than their daddy was at their respective ages and definitely taller than mommy was.