Mum's sickening discovery in daughter's school skirt

While trying to pinpoint the source of the foul odour, Ms Kirkwood noticed a section of lining that appeared to be thicker than others. Photo / Getty Images

A mum has made a horrific discovery after noticing a "pungent smell" coming from her daughter's new school skirt.

Natalie Kirkwood bought the skirt from UK retailer Asda for her 7-year-old daughter, Sophia, to wear to school.

While trying to pinpoint the source of the foul odour, Kirkwood noticed a section of lining that appeared to be thicker than others.

She filmed herself cutting open the lining as evidence to show Asda if the skirt had to be returned and, to her disgust, she found a rotting mouse inside.

In the footage she can be heard saying: "Oh my god, the smell. This is definitely a mouse.

"I felt disgusted when I found the rotting mouse inside the skirt," she said.

"My daughter has worn that skirt with a decomposing mouse sewn inside it on numerous occasions. What if it made her ill?"

Kirkwood said she contacted Asda who advised her to keep the mouse and skirt until someone from the company could pick it up.

An Asda spokesman said: "We have begun a thorough investigation into how the mouse got into a skirt that was manufactured last summer."​