I have two ready-made children (aged 3.5 and very nearly 2) and one cooking. The 3rd arrives in January and so the inevitable problem of fitting us all in a car is looming...
My DD2 will be 2 in a couple of weeks and is a chunky one, currently weighing in at anywhere between 13.9kg and 14.9kg depending on the time of day (and I think the scales must be slightly dodgy too!). Assuming she reaches the full 15kg (or very near) by the time #3 is fully cooked, is she okay to go in a high back booster designed for 15kg+ (but 4yrs)? (Looking at the Britax adventure atm)