Bang Showbiz reported the Sexy Back singer, The Social Network star and fashion designer married Total Recall actress Biel in Jackson Hole on Saturday, in an intimate ceremony on a private estate.

Late last week Biel was in London promoting her new film and admitted she was open to the idea of Timberlake planning the big day.

"He does have incredible taste," she said during an interview on a popular daytime TV show This Morning.

"I am not one of those people who is not very detail orientated. I'll probably give an idea and let it be created.

"I feel like most of my friends, bless them, always go through some sort of something, one day of 'bridezilla', so maybe it's just part of the experience, you just have to do it."

Rumours of the Timberlake-Biel union began circulating when celebrity wedding cake designer Sylvia Weinstock tweeted she was in the small town in Wyoming.

Then on Saturday, Timberlake's best friend and William Rast co-founder and business partner, Trace Ayala tweeted a photo of a giant convivial cocktail with the caption "God bless Saturday!" - which Timberlake later re-tweeted.

Biel, who said Timberlake acts as her stylist, chose to wear all white and ivory outfits for the final leg of the European promotional tour ahead of her reported wedding over the weekend.

Earlier this year US Weekly reported the bride-to-be would be dressed by designer Monique Lhuillier for the big day.

Timberlake proposed with a $130,000 vintage-style, square-cut diamond ring in December last year.

They have been in an on-again, off-again relationship for five years.