Brad Pitt is "longing for" sleep following the birth of his twins in July.

The 'Burn After Reading' star — whose babies Knox Leon and Vivienne Marcheline are his fifth and sixth children with partner Angelina Jolie – admitted that, while he is happy with the new additions to his family, he wishes he could spend more time in bed.

Asked how the twins were doing, Pitt replied: "They are all good — everyone's healthy, and everyone's great. Sleep is something we long for, but that's alright, we'll get it soon!"

When the 44-year-old actor was questioned about what makes him laugh, he replied: "My kids!"

Pitt appears alongside close friend George Clooney in 'Burn After Reading'.

In the movie, from legendary directors the Coen brothers, Pitt plays Chad Feldheimer – a gym employee who finds a disc full of personal financial files and uses it to blackmail Osbourne Cox, played by John Malkovich.

The film is released worldwide later this year.