Beckham, 40, is known for her poker face and rarely flashing a smile for the cameras, reported Femalefirst.
"People are probably surprised that I have a sense of humour. I like to take the mickey out of myself. As much as I take what I do very seriously, I also want to have fun.
"I like to poke fun at myself... And I think that surprises people." she added
Beckham said she puts a huge amount of pressure on herself to make her fashion empire a success.
"I never went into this to prove anything to anybody, other than myself. I think if you're too afraid of failure then you won't challenge yourself, then you won't move forward. I like to challenge myself," she added.
