Kelly Osbourne is struggling with her breathing after being diagnosed with pneumonia

Alongside a clip on her Instagram Story of her breathing through a tube on Tuesday (07.01.25), she wrote: "So I may have developed pneumonia."

Earlier in the evening, Kelly - who has one-year-old son Sidney with her musician boyfriend Sid Wilson - shared a picture of a thermometer showing her high reading.

She added: "How is this happening? How am I sick again?"

Last week, Kelly complained to fans she can't find any remedy to work as she fights her festive illness.

She said on her Instagram Story while revealing the level of her fever: "Still going strong. I have put ice on my body, taken meds, tried to sweat it out in the bath and nothing is working!"

In another video, she added: "Day three of having a fever and a little cough. "Babies bounce back so quickly but I don't seem to be at all. I don't want to be sick anymore."

Kelly then revealed she had taken her little boy to the doctor and learned there that they are both sick with respiratory syncytial virus.

Known as RSV, it's is a common illness that causes infections of the lungs and respiratory tract.

It's especially common in winter and infects most children by the age of two.

Kelly and her toddler have been sick together before - with the pair both battling flu in 2023.

Her partner Sidney, 47, who is the DJ for metal band Slipknot, also recently had a health scare when he suffered severe burns following an explosion at his and Kelly's farm in August.

He told Fox News Digital: "My whole right arm is bandaged up, half of my left arm.

"But the swelling's gone down, and they said the face is kind of amazing that it's regenerative, it happens real fast, seems to heal quickly."