Tina and Beyonce Knowles
Tina Knowles has married Richard LawsonReuters

Superstar Beyoncé now has a new stepfather after her mother tied the knot for the second time.

TMZ reports that Tina Knowles has married Richard Lawson on board a yacht outside of Newport Beach, California, after almost two years of dating.

The 61-year-old business woman and fashion designer and actor exchanged vows at the all-white wedding ceremony attended by 300 guests including daughters Beyoncé and Solange and Jay Z and Blue Ivy.

Knowles was previously married to music manager Mathew Knowles but the couple split in 2009. She filed for divorce after 31 years of marriage when it was revealed that he had had an affair with actress Alexsandra Wright and fathered a baby boy, Nixon, by her.

Lawson, who is best known for his work on the soap All My Children, as well as appearing in the 1982 horror Poltergeist, was married to American actress Denise Gordy from 1978 to 1989.

In November 2014, Solange got hitched to 51-year-old video producer Alan Ferguson in New Orleans. Their three-day wedding extravanganza included a movie night with close family and friends on the Friday night, a rehearsal dinner on the Saturday before the ceremony held at Holy Trinity Church on Sunday.

Knowles's surprise wedding also comes just days after Beyoncé celebrated her seven years anniversary with rapper husband Jay Z. While the power couple, who married in secret in 4 April 2008, celebrated the milestone with a Hawaiian vacation, the music mogul treated fans to clip of their nuptials.

In the footage, the stunning bride is seen wearing a traditional white gown with a veil, while Jay is dressed in a formal tux.

The two look intently at each other as they exchange intense glances and the groom places a huge diamond on her finger. Surrounded by crystals hanging from the branches of trees, the two are showered with petals as they walk down the aisle past their guests.