Wong Yee-ting, a 29-year-old insurance manager, was convicted of animal cruelty at Tuen Mun Court.
She was also ordered to pay the Society for the Prevention of Cruelty to Animals HK$27,000 to cover their costs for looking after her pet.
In sentencing, deputy magistrate Fung Lim-wai said the defendant had treated the incident as a joke and ignored the plight of the cat.
However, he noted the animal was not seriously injured.
Fung said he believed the defendant had learned a lesson and it’s unlikely she would commit the crime again.
The case grabbed media attention as Wong is a sister of former Miss Hong Kong, Carmaney Wong.