Isabella Brooke Jackson) is the youngest triplet & only daughter of Lisa and Terry and the triplet sister of Ethan & Will. She is currently 18 in 2018.

Appearance on Supernanny

Isabella was known to have the worst temper out of the triplets and had a tendency to be very stubborn and get Sometimes angry or annoyed. She was sent to time-out 3 times, for misbehaving at lunch, hitting one of her brothers and disrespecting her mom.