Gabrielle Cantoni (born September 9th 2003) is the middle child of Paul and Nina, the younger sister of Nicholas and the older sister of Giana.

Gabrielle was a "daddy's girl". She was very strong-willed, bossy and defiant. She would throw temper tantrums if she didn't get her own way. She would also bite and refuse to go to bed, getting out as many as 30 times a night.

She was 3 years old at the time of her appearance on Supernanny and she is now 15 in 2018.