The 38-year-old designer, who is married to footballer David Beckham, says she is aware that people think of her as sour-faced, the Daily Mail reported.
"Yes, I created this persona and I'm very different from that. I don't feel like I have to scream and shout about it - I know I am a happy person. So I don't get upset when people comment on the fact that I look quite miserable all the time," Victoria told German 'Interview' magazine.
"But people think I am. And you know, sometimes I think the same thing when I look at the pictures," the mother-of-four said.
Victoria, a fashionista in her own right, found fame as a singer with 'Spice Girls' but she admits that music was not her true calling.
"Was music my talent really? No, I don't think I was particularly talented. With the other girls, the five of us all really worked together. But talented? I sound a bit odd to myself."