Can you fit a harness on the Antilop? The highchair we had for ds 1 and 2 is now permanently in its table and chair form, I think. The Antilop looks great - easy to clean, cheap, tray looks removable - but I couldn't see on the picture where/how you fitted a harness? Both ds 1 and 2 were big climbers, so I want to secure dd safely...