A former Citigroup secretary must serve 4 1/2 years in prison for stealing $1.3 million from William Salomon, the 99-year-old former Wall Streeter who is the son of the founder of Salomon Brothers, a judge ruled yesterday.

Karen Febles, 48, was sentenced in federal court in Newark. She used the money she stole to pay for cars, real estate, cruises and jewelry, prosecutors said.