Horrific pictures show a Tennessee toddler's feet covered in burns and blisters after they were dipped into boiling water by a relative.

The abhorrent incident occurred on August 11 when two-year-old Kaylee Robinson was being babysat by her step-grandmother, Jennifer Vaughn, at her home in Chattanooga.

The toddler's mother, Brittany Smith, told ABC 2 that Vaughn admitted to using the scalding water on the tot because she was 'having a bad day'.

Vaughn has now been charged with aggravated child abuse and is being held on a $150,000 bond.

Meanwhile, Smith has shared pictures of her little girl's feet with several media outlets - the same images that have been looked at by authorities who are now assigned to the case.

Rhea County Sheriff's Department detective Rocky Potter - who has examined the photographs - told ABC 2 that they feature 'the worst scald burns I've ever seen'.

Jennifer Vaughn (left) has been charged with aggravated child abuse after placing her step-granddaughter Kaylee Robinson's (right) feet into boiling water

Rhea County Sheriff's Department detective Rocky Potter - who has examined the photographs - told ABC 2 that they feature 'the worst scald burns I've ever seen'

According to Detective Potter, the hospital where little Kaylee is being treated describe the injuries as 'sock burns', because they look as if she is wearing a pink pair of socks.

Meanwhile, Smith told Metro that her daughter's wounds appear to be getting worse, and not better, in the nine days since the incident.

'It's terrible, it's just so stressful. Kaylee has had two operations so far, but they haven't worked. The skin is not really repairing itself in the way the doctors hoped it would. She's in a lot of pain,' the anguished mom told the publication.

'They [surgeons] are going to take some skin from her thigh next week to try and repair her feet,' she added.

Smith also revealed that Kaylee 'is at high risk of infection and could end up losing her feet'.

Photos show the tot with third-degree burns at the top of her feet and large welting blisters wrapping around her ankles.

A GoFundMe has been set up to help with Kaylee's medical costs.

Photos show the tot with third-degree burns at the top of her feet and large welting blisters wrapping around her ankles

Smith told Metro that she left Kaylee at the home of Vaughn - who is the mother of her fiance Kyle Vaughn - while she took her two older children swimming.

Kaylee had been babysat by her step-grandmother on several occasions previously without incident.

However, shortly after dropping off her daughter at Vaughn's home on August 11, Smith received a call from her soon-to-be mother-in-law telling her to come back.

'I could hear Kaylee screaming in the background,' Smith recalled. 'She said that I had to come home right away.

When she returned to the address, Kaylee was still wailing in agony, but Vaughn wasn't initially forthcoming about how the tot had sustained the burns.

After originally claiming she left the toddler alone in the bath, Vaughn conceded she dipped the feet in boiling water because Kaylee was misbehaving.

'It's not right. There is nothing in this world that a two-year-old can do, no matter how bad they lashed out at you,' Smith told ABC 2 .

She went on to tell Metro: 'If I had my way, she would have the exactly same punishment given to her that she inflicted on my daughter. I would like someone to burn her feet just the same.'