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Some fellow "Idol" alums attended the wedding, including Sanjaya Malakar, Haley Scarnato and Melinda Doolittle.
Jones was booted from "Idol" in May 2007, finishing as fourth runner-up. She has an album due out in February 2009.
The couple will honeymoon in Barbados.
Former American Idol star LaKisha Jones married financial adviser Larry Davis on Sunday – with a fair share of her season-six castmates to bear witness.
As about 50 family and friends – including Haley Scarnato, Melinda Doolittle, Gina Glocksen and Sanjaya Malakar (sporting shoulder-length loose curls) – looked on, Jones, 28, exchanged vows with Davis at the Beverly Wilshire Hotel.
In keeping with the event's theme of old-fashioned Hollywood glamour, white round candles perched on floating black stands and red rose petals dotted the floor.
The bride – beaming in a strapless Alfred Angelo gown, custom crystal-encrusted shoes by Stuart Weitzman and diamond earrings, necklace and bracelet by Neil Lane – punctuated the ceremony with laughter during a vow that included the phrase "for richer or less richer."