Singer John Legend and his model wife Chrissy Teigen helped to score $100,000 (Gbp62,500) for an anti-sex trafficking charity - as a belated wedding gift.

The couple was celebrating Teigen's Sports Illustrated cover in Miami, Florida on Thursday (20Feb14), when they ran into billionaire philanthropist Stewart Rahr, who asked the couple to pick a charity of their choice for him to donate funds to as a wedding present.

Teigen, who became Mrs. Legend in September (13), picked the Somaly Mam Foundation, which works to battle sex trafficking around the world, and in return she gifted Rahr a signed copy of her Sports Illustrated cover, according to the New York Daily News.