NEW YORK, June 3 (Reuters) - Andy Sieg, Citi's head of wealth management, announced on Tuesday the hiring of Nadiya Konstantynova as the division's new chief operating officer.

Nadiya will join Citigroup C.N on June 18 from McKinsey & Company, where she spent the last 18 years of her career, Sieg said in an internal memo to employees seen by Reuters.