Kate Beckinsale reveals pair of leggings caused painful leg injury that led to her hospitalisation

Kate Beckinsale has revealed for the first time what caused the injury that led to her hospitalisation last month.

The Serendipity actress shared details about the painful leg injury, which took place in a hotel room in Las Vegas, where she was at the time to film the movie Prisoner's Daughter.

And while the 48-year-old British star laughs about it now, she actually couldn't sit or stand after it felt like a "guitar string snapped" in her leg.

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"Having done eight or 900 action movies, I hurt myself putting on a pair of leggings in my hotel room," Beckinsale recalled to host James Corden and her fellow guest, Dave Grohl. 

Corden wondered if Beckinsale hurt herself "falling off a building or something" during filming but the actress joked she was working on an "intense, emotional drama" at the time and "not running up walls or anything". 

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"I was in my hotel room putting on a pair of leggings and then it felt like a sort of guitar string snapped," she revealed. "Everything was horrific. It was worse than having a baby. I couldn't walk, I couldn't lie down, I couldn't sit down, I couldn't do anything."

She said an ambulance was then called and she had to be hoisted up with a bedsheet. 

"They rolled out a sheet and picked me up in it, like a sort of a sausage and put me in a gurney," she remembered. 

Watch the above video for more.

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It was last month that Beckinsale first revealed she was taken to hospital, although she did not go into detail.

"Feeling a lot better. Thank you so much for your kind messages and love," she wrote alongside a photo of herself in her hospital bed, attached to an IV.

Sources at the time told TMZ, the actress was rushed to hospital because her "back went out".