Wesley and his laser booster

Wesley has had it in his head that when he turned  5 he could get a "booster" instead of a "baby carseat" & since his carseat was pretty beat up and nasty, I decided it was a good idea. He was SO excited to go pick one out and chose a "laser" one (it's black with red diagonal stiched lines) He wanted me to take his picture and post it on picture-gram :) Do they really have to grow up so fast?? I swear, just yesterday he was rear facing in his carseat with his little head propped up... :/