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?

If your child is able to stand up without support, then I think it's time for her to be showering rather than bathing in bathtubs. Once in a while is fine but it's good to get used to showers so you can get her showered and freshly changed when required. If she hasn't outgrown it and likes playing with it, you can let her soak in the tub once in a while.