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

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

Jessica Simpson's Instagram selfie has fans concerned about weight

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

Katie Holmes, Lindsay Lohan, Jessica Simpson and More Sexy

Jessica Simpson, 43, shares 'unrecognizable' photo taken six years

Ashlee Simpson: You Asked, We Answered - The New York Times

Jessica Simpson through the years: See her evolution in photos

Beautycon Flashback: Inside Jessica Simpson and Daughter Maxwell's

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: The FN Magazine Cover Photos for FNAA Icon Award

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