The brunette beauty - who has a two-year-old daughter Honor with husband Cash Warren - admitted while her body has changed since she became a mother she doesn't mind what has happened to her shape because motherhood is such a wonderful thing.
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The Fantastic Four star also revealed she doesn't understand why she is seen as something of a sex symbol, as she had never even worn a dress before she got involved with the movie industry.
Jessica added to Britain's GQ magazine: "I don't get it. Every actress out there is more beautiful than me. I've never been comfortable showing my body off like that. I used to have anxiety attacks before I did the photo shoots.