“Grace Kelly” singer Mika is at his sister’s bedside in hospital after the 28-year-old plunged from a third story window onto a spiked barrier fence.

Paloma Penniman was said to be sitting on a window ledge on the third floor of her Kensington home when she lost her balance and toppled out in the early hours of Sunday morning (October 10).

Mika was present at the time and witnessed the incident, making the call to the emergency services who arrived around 5:00 am.

As a result of the fall, both of Penniman’s legs were impaled and one pierced her abdomen. Firemen allegedly had to cut out a section of the railing to free the stylist.

A Metropolitan police spokesperson said: "Police were called to an address at 5:15 this morning, after reports a woman was impaled on railings after falling from a window."

A spokesman for Mika added: "She is in a critical but stable state. The family have asked for privacy at this time."