Threatening and intimidating behaviour Milff photo
Price was joined by her boyfriend Kris Boyson at court.
The reality TV star failed to attend a hearing relating to the case at Crawley Magistrate’s Court in March as she was on holiday in Thailand at the time.
Paul Macauley, defending, said the outburst was a reaction to Price's recent discovery that Penticost was in a relationship with Hayler.
Price and Hayler - who married in 2013 - share five-year-old son Jett and four-year-old daughter Bunny.
Magistrates ordered Price pay a fine of £415 and banned her from contacting Penticost after she hurled a "tirade of abuse in front of young children in the playground of a primary school in Shipley, West Sussex on September 6, 2018.
It is settled that it is a tort in a three-party situation, that is, where A threatens B that if he does not do something to C, A will do something unlawful to B.
Thus, any court action is by C, who is injured against A who used B to injure him.
Read more: Katie Price says she looked like a ' Space Invader' after her recent cosmetic surgery" data-reactid="34"Read more: Katie Price says she looked like a 'Space Invader' after her recent cosmetic surgery During the row, which was witnessed by a teacher, Price is said to have shouted "f***ing c***" multiple times at Pentecost and her friend and her friend Andrea Quigley.
Price changed her plea to guilty in relation to two counts of using threatening, abusive, words or behaviour to cause harassment, alarm or distress.