It is reported that several other adult models attended the party, which doubled as a photo shoot for Pontawee and other attendees.
A mother has been left devastated after her two-year-old boy drowned in a villa swimming pool.
The incident happened while the model mum reportedly partied with friends at a photoshoot nearby.
Wiyada Pontawee, 26, and her photographer husband took toddler Chawanakon Hancharoenpanna to a house in Pattya, Thailand on Valentine's Day.
It is reported that several other adult models attended the party, which doubled as a photo shoot for Pontawee and other attendees.
Wiyada, whose nickname is "Soda", posed in front of the pool in a revealing black bikini and another of her on a snooker table with her legs spread.
As she posed during the photoshoot, Chawanakon Hancharoenpanna and his brother are seen splashing about in the swimming pool nearby.
Chawanakon, who was only two days from his third birthday, tragically drowned in the pool later that evening while his mother was reportedly working inside, taking photos and videos indoors.
Chawanakon's father heard him struggling in the water and they called emergency services around 10pm on Feb 14, 2022.
Medics performed CPR on the youngster who was taken to hospital and sadly pronounced dead later that evening.
Wiyada said: "I'm heartbroken. I don't want to live anymore. I am praying to bring my son back to life."
The boy's father, Pongrit Hancharoenpanna, told paramedics that he and his wife "were working" at the time of the accident.
Speaking from the scene, he said: "I was working when it happened. Then I heard the sound from the water and saw my boy in the pool. He was choking, so I jumped in to help him but it was too late."
Wiyada regularly poses in explicit images for OnlyFans and other adult websites where she charges followers for the content she makes.