Keira Knightley has admitted she 'didn't care about fitting back in her jeans' after giving birth to her two daughters.

The actress, 40, shares daughters Edie, 10, and Delilah, six, with her musician husband James Righton, 42.

Speaking candidly on Giovanna Fletcher's Happy Mum Happy Baby podcast, the Black Doves star reflected on her post-partum figure as she opened up on her post-natal depression battle that left her needing 'lots of therapy'.

Although she was 'surprised' her body didn't bounce back to normal, Keira said she didn't mind that she fitted into bigger jeans.

Keira said: 'I was very surprised that it didn't. I've always had a body where I did I had to do very little and it was just one of those thin bodies, you know, it came back. 

'And it didn't [after giving birth]. And it hasn't, you know. And so, yeah, I was surprised, but I was also like, there’s more important things, I'll just buy a bigger size of jeans. I mean, I kept my clothes from pre thinking that I would be able to fit.' 

Keira admitted she had 'lots of therapy' after having what she calls a 'hormonal crash' after welcoming her daughters.

Despite having a 'completely normal birth', Keira said she struggled massively with sleep deprivation for three years.

Keira shared: 'I remember the kind of hormonal crash. I’d been on this amazing hormonal high, and then there was a crash down. I think after that it was post-natal depression for a while. 

'I did lots of therapy about a year, maybe a couple of years later, to sort of deal with all of that. But it was confusing, not having that physical side of it made everything more confusing.'

She added: 'There wasn’t any sleep for three years and that was for a completely normal birth. There were no major complications, it went pretty well, especially for a first birth. The baby was fine. I was fine.

'Everything was fine and still, despite everything being completely fine, this huge, life-altering thing had happened. 

'At that point, I felt like the public discourse around it was terrible: “Can you get back in your jeans yet? Back to work? Nothing’s happened. Carry on. You’re going out.” It felt like there was no discussion, no interest, just, “When are you getting back in your jeans?”

'And I was like, what? I’m on a different planet. I’ve just travelled from one planet to another. I didn’t care about my jeans.'

Last week, Keira revealed she has banned social media in her house to save her kids from the evils of the internet.

She has just written a children's book and opened up about her fears for her kids being glued to devices while promoting the new venture. 

She revealed on Radio 4: 'I find it very terrifying because they are unregulated spaces, and once children are in unregulated spaces, these are the ones I want to protect them from.

'So, in our house, we've got a no social media thing. They are not allowed on devices if we can't see what they are looking at, then they are not allowed on them. I don't know if that's right, you know. How long can I keep that going? I don't know!

'We are at one of the schools that is doing that social media-free childhood – where the parents mostly do the same thing.

'So, I think most of the parents at the school – there was a big push and most of us agree that that's the way forward we want to go, but obviously not everybody, because it is an issue that divides lots of people.

'So, you try and go "okay, at this play date, what are you doing to see, what are you not doing to see?" And it's great to have a group of parents where you can be open and you can have those conversations, and that's what you hope, but obviously that's not the case everywhere.

'I think that is the case at our school more, in that particular year group, but I think, again, it could change from year group to year group.

'I would love though, if some regulation came in so it wasn't all put on the parents, though.'