Sydney, Apr 8 (Agencies): Confidential understands the former Test cricketer tied the knot for the second time in a private ceremony at his new home in Seaforth last weekend.
Alan Jones was MC at a party during which guests then found out was to be the nuptials of the high-profile sportsman.
Lee, 37, was previously married to Elizabeth Kemp in 2006 with the pair separating after just two years together. They are parents to a son, Preston.
Lee and Anderson, 29, went public with their new romance last August, attending the Joan Sutherland and Richard Bonynge Foundation Fundraiser at Le Montage in Lilyfield.
They refused to be photographed together on the media wall but were snapped kissing and holding hands inside.
The pair is believed to have moved in together at the end of last year.
Anderson is close friends with Jodi Anasta and was bridesmaid at her tropical wedding to league star Braith Anasta in Bali in 2012.