age and weight for booster seat

[danniellabella]

I should probably jump in here with my question.
DD is 3 and weighs about 18kg - she's in a birth to 26kg seat, but she's as tall as most average size 5 year olds. Should she be in a booster?

[*Efjay*]

I should probably jump in here with my question.
DD is 3 and weighs about 18kg - she's in a birth to 26kg seat, but she's as tall as most average size 5 year olds. Should she be in a booster?

I am pretty sure the rule is when their eyes are level with the back of the seat they are too big.