Christine Hearst, a lawyer, and Stephen A. Schwarzman, the investment banker, were married on Friday at the bridegroom's apartment in New York. Rabbi Bertram Siegel officiated with the Rev. Sam Matarazzo, a Roman Catholic priest.

Mrs. Schwarzman is a senior associate at Cowan, Liebowitz & Latman, a law firm in New York, where she specializes in intellectual property law. She graduated from Hofstra University and received her law degree from New York University. She is a daughter of Peggie Mularchuk of Hicksville, L.I., and the late Peter Mularchuk. The bride's father owned Electritek Industries, a former distributor of appliance parts in Hicksville.

Mr. Schwarzman was a founder of and is the president and chief executive of the Blackstone Group, the investment bank in New York. He graduated from Yale University and received his M.B.A. from Harvard University. He is a son of Arline and Joseph Schwarzman of Huntington Valley, Pa. The bridegroom's father, now retired, owned Schwarzman's, a former dry-goods store in Philadelphia.

The couple's previous marriages ended in divorce.