During an interview with the American edition of Elle magazine, the former Spice Girl revealed the reasons behind her sour puss.
"I do have my insecurities. Maybe that’s why I look a little bit serious. The kind of person who’s going to stand on the red carpet and have the big grin – I’m not like that. I want to get in there, do what I’ve got to do, and get home to my kids," revealed Beckham.
She was recently invited to be a guest judge on American Idol, and says she knows what types of project she wants to be associated with. "I know my boundaries – I know what I’m good at and what I’m not good at," concluded the 35-year-old star.