Late Hollywood fashion critic Mr. Blackwell's longtime partner Robert L. Spencer has died at the age of 94.

Spencer died of a heart attack on Saturday (01Mar14) in Los Angeles, his publicist confirms.

He was Richard Blackwell's business and personal partner and they were together for 59 years until the Worst Dressed List inventor's death in 2008.

Spencer was introduced to Blackwell by movie legend Cary Grant and they soon became one of Hollywood's leading power couples. They launched the glamorous House of Blackwell in 1958, dressing iconic stars including Jayne Mansfield, Mae West, Dorothy Lamour, Goldie Hawn, and America's former First Lady Nancy Reagan.