New York (ANI): Jessica Simpson is still taken aback for becoming famous after gaining extra pounds and slipping into "mom jeans" last year. "The fact I was famous last year for gaining 10 pounds is ridiculous and really sad," the New York Post quoted her, as telling Oprah Winfrey in an interview.

Simpson, 29, went on: "It would bother any woman, I would think. "I didn't want to sit down and talk with anybody about it, because I felt guilty. "I felt like, you know, if people look at me and maybe they''re a size bigger, they look at themselves and they think they''re fat. "I don''t want other people to feel fat if they''re a size 6 or whatever size they are."

The 5-foot-3 singer claims that her so-called "mom jeans" were only a size 4 and she fluctuates between size 4 and 6, even as OK! mag reported last year that she told a pal she could easily slip into an 8. Simpson said: "It''s a really hard thing for me to talk about. "Because I celebrate women of all sizes, and I think we''re all beautiful."

Jessica appeared on Oprah to promote her forthcoming VH1 reality show, "The Price of Beauty," where she and her pals travel across the world to find out the various local standards of beauty.