Dr. Mitch Besser and Annie Lennox
09/18/2012 AT 11:15 AM EDT
09/18/2012 AT 07:40 AM EDT
Sweet dreams are made to come true for Annie Lennox
The singer, 57, got married last Saturday in London, her spokesperson confirms.
Lennox tied the knot with American Dr. Mitch Besser, also 57. The Harvard-educated gynecologist founded mothers2mothers
, a private organization based in Africa that is dedicated to reducing mother-to-child HIV transmission.
The Mail Online
reported that the private ceremony took place with 150 friends on a private boat on the Thames River.
According to the report, Lennox's daughters, Lola, 22, and model Tali, 19, were her bridesmaids. The bride wore a long white gown with lace bolero shrug and a vintage 1920s-style headpiece.
Guests munched on sashimi and mini roast puddings, followed by mini fruitcakes for dessert. Guests included Oscar winner Colin Firth and American comedienne Ruby Wax.
The Scottish Daily Record
quoted a friend as saying, "She and Mitch are probably going to get away for a few days." On Lennox's Facebook page, she posted a photo of her white and pastel pink wedding flowers.
Previously, the Scottish crooner was married to German Hare Krishna devotee Radha Raman and Israeli film producer Uri Fruchtmann, who is the father of her two daughters.
Lennox reportedly met Besser in 2009 through his charity for which she fundraises. In 2011, Lennox received an OBE from Queen Elizabeth, not for her contributions to music, but for her charity work. She is a committed activist, raising money and awareness for HIV charities.