Kristen Bell says 'Veronica Mars' was the "hardest job" she's worked on so far

Speaking to 'Extra' about the programme's 20th anniversary, she said: "I'm very grateful for that project. It allowed me to discover who I am... It allowed me to discover my flow as a performer.

"It was also the hardest job I've had to date. That was before the union was enforcing any real rules and we were there for 17 hours a day...

"It was such a hard, physically demanding shoot."

The 'Good Place' actress is soon to be back on the small screen in new Netflix rom-com series 'Nobody Wants This', which sees her reunite with former 'House of Lies' co-star Adam Brody.

The pair recalled working together on the Showtime comedy-drama - which aired from 2012 until 2016 - including one awkward love love scene when Kristen was "eight months pregnant".

The mother-of-two - who has daughters Lincoln, 11, and Delta, nine, with husband Dax Shepard - recalled she was "45 lbs in" to her pregnancy, while Adam quipped: "We had a sex scene, and you weren't playing someone pregnant."

She joked that they had to figure out some "precarious positions" to make the scene work.

And Adam revealed: "Her stand-in came in for the wide shots."

Kristen previously opened up on her decision to return to 'Veronica Mars' for the 2019 revival, noting she only did so for the sake of her daughters.

She told Entertainment Tonight: "I think it's really important to recognise this character, who Rob [Thomas, the show's creator] calls 'post-superhero without a cape,' is still very relevant. We are having a lot of public conversations right now about girls and conduct and how you act as a strong female. I am not prouder than anything than having been a part of this role that my daughters will see one day because Veronica knows how to act in the world.

"They say, 'Make change through your art, pick projects that you think will promote the goodness that you want to see in the world.' And this, man, this is one of those shows for me."