Annie Lennox Annie Lennox

Third time's the charm for Annie Lennox! The singer married Dr. Mitch Besser in London, the Daily Mail reports.

The couple tied to knot during a private boat ceremony on the River Thames last Saturday.

Lennox and Besser met in 2009 after the former Eurythmics star became involved with the gynecologist's charity, mothers2mothers, an Africa-based organization dedicated to children and mothers with Aids.

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At the time, Besser was still married. His wife of 28 years, Debra Jackson filed for divorce last year after photos of her husband and the singer holding hands went public.Lennox's daughters, Lola, 22, and Taili, 19, were rumored to have been her bridesmaids during the ceremony. It's unknown whether Besser's two sons with Jackson were in attendance.Guests included Colin Firth

and comedienne Ruby Wax.