updated 06/28/2011 AT 4:00 PM ET
•originally published 06/28/2011 AT 5:30 PM ET
She was 36 when she died, but the spirit and grace of Princess Diana has lived on through the years.
On its latest cover, a computer-generated image of the late princess is superimposed into a photograph of an upbeat and on-the-town Duchess Catherine. The cover and corresponding story, penned by editor-in-chief and Diana biographer Tina Brown, imagines what her life would be like today if tragedy had not struck on Aug. 31, 1997.
“Diana would have been 50 this month,” Brown writes. “What would she have been like? Still great-looking: that’s a given.”