Geri Halliwell and Italian shipping tycoon Fabrizio Politi, who began dating in December, announced their engagement on Tuesday.
Halliwell's management firm, 19, said no date has yet been set for the wedding.
Politi, who owns Fashion Yachts and Politi Navi, reportedly gave Halliwell a diamond engagement ring.
The former Spice Girl, 37, has a daughter from her relationship with ex boyfriend, scriptwriter Sacha Gervasi.
Politi, 36, announced in September that his latest luxury venture Politi Navi had orders to build seven types of yachts - ranging from 35 to 85 metres - for Chinese, Russian and Arab clients ready to spend up to 80 million dollars.
''I feel somewhat like Enzo Ferrari must have felt when he began building his sports cars at the start of his career, aware that he was creating something destined to become legendary and representative of Italian style''.
