I am curious to know how everybody else is going about bath time with their little ones? My girl is 18months old and I'm still using the infant bath tub on her, is it time to move out of it?

I bought the big tub from Mothercare. My daughter got to use it until she turned 3. She just sits in the tub though. Now, I use the tub for my 1 yo while the 3yo sits on a small stool. I shower them together and they always have a blast!