Possible Clues:

• 'In My Own Fashion' autobiographer Cassini
• Name hidden in "whole grain"
• Designing first name
• Jackie O couturier Cassini
• Salyut 7 cosmonaut Atkov
• Two-time pairs skating gold medalist Protopopov
• Fashionable first name
• 1980s KGB defector Gordievsky
• Cassini of design
• Jackie O's favored designer