Photo flashback: Jessica Simpson's life and career in pictures

Celebrate Jessica Simpson's 40th birthday by taking a look back and her life and career in pictures!

Jessica Simpson In The Press Room For The 32Nd Annual People'S Choice Awards, The Shrine Auditorium, Los Angeles, Ca, January 10, Photo By, Jessica Simpson 2006

Jessica Simpson's Instagram, Twitter & Facebook on IDCrawl

Jessica Simpson fans stunned at her mother Tina Simpson's age

Jessica Simpson weight loss: Instagram photos have fans worried

Jessica Simpson celebrates 6-year wedding anniversary with Eric

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Jessica Simpson Recalls Secret Romance With 'Massive Movie Star

Photo flashback: Jessica Simpson's life and career in pictures

Jessica Simpon's husband shares wedding pics on 7th anniversary

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Beautycon Flashback: Jessica Simpson on How Her Husband