A Yves Saint Laurent’s design -- suitable for a museum but not polite society

LOOKING BACK: Yves Saint Laurent’s designs walked the line between clothing and fine art. Here, a 1970 evening gown.

The first Yves Saint Laurent retrospective since his death earlier this year opened Saturday at the De Young Museum with more than 120 of the designer's haute couture ensembles. The pieces span his 40-plus-year career, from his early days at Dior to his final spring/summer runway collection in 2002, the year he retired.