The One Show's Alex Jones pushed Sienna Miller on a burning issue on Friday night's episode - what is the secret of Paul Judd's youthful looks?

British actress Sienna joined Alex and her co-host Alex Scott via video call to talk about her film The Catcher Was A Spy, which she stars on with Paul.

After playing a joke on her, when Alex said that it was tradition for guests to send the hosts presents to mark their first appearance on the BBC show, Sienna was quizzed about how hard it's been to be in the entertainment industry over the past 12 months as the coronavirus pandemic shut everything down.

She told then: "The first lockdown was kind of nice in a way. It felt like a snow day that went on and on. But I've actually been really lucky as I've been filming since November.

"And having somewhere to go and leave the house feels somewhat normal. I've been really lucky but it's really challenging for everybody."

Sienna then moved onto discuss The Catcher and the Spy, based on the real-life story of a pro baseball player who was recruited to be a spy in World War Two and sent into Nazi Germany to try and kill nuclear scientists who were developing the atomic bomb.

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After seeing a clip of the movie, with Sienna playing opposite Paul, Alex told her: "We are big fans of Paul Rudd here and he gives an amazing performance in that film BUT.....we thought we wanted to know an thought 'Sienna will know the answer to this - what is Paul Rudd's secret to eternal youth?!

As pictures of Anchorman, Clueless and Friends actor Paul from 1995 and 2020 appeared next to each other on screen, with the now 51-year-old still looking very youthful, Alex added: "We've got two pictures 25 years apart and he looks no different!"

Sienna replied: "It's really quite enraging; he looks exactly the same; he's just ageless.

"I don't know what his secret it as, you know, he has the odd glass of wine, he's certainly not a monk by any means and yes, eternally youthful. Annoying"