AceShowbiz - Patricia Clarkson has divulged that her former co-star Justin Timberlake is "gifted below the waist".

Popstar-turned-actor Justin starred as the lead character in 2011 romantic comedy "Friends with Benefits", with Mila Kunis playing his love interest and Patricia taking on the part of her nosy mother.

One scene in the film saw Justin's character appear nearly-nude, with the Oscar-nominated actress now revealing that she got a glimpse of her castmate's manhood during the shoot too.

"Who had your biggest chance of being your friend with benefits on the set of 'Friends with Benefits'?" host Andy Cohen asked her during an interview on "Watch What Happens Live" on Thursday night (June 28) to which Patricia replied, "Hands down Justin Timberlake. Cause if we want to talk about big."

Andy then continued to probe the 58-year-old on the topic and questioned, "Is Justin endowed well?"

"Well, I had the good fortune to get to see him all there because they were shooting a scene where he couldn't put anything on. He is a gorgeous man," she responded.

"He's gifted below the waist?" Andy inquired again, to which Patricia concluded, "Oh, yes."

Andy then joked that Patricia's revelation was the "best scoop" he'd had in nine years, while the red-faced actress added, "His mother's going to kill me!"

During the segment, the star also shared that she scored her biggest pay cheque ever for her work on "The Maze Runner" movie and that she was most shocked to beat out Kathy Bates for an Emmy Award.

In addition, the "Easy A" actress joined in on a game of "Plead the Fifth" and was asked about her best and worst onscreen kisses. She noted that she enjoyed locking lips with British actor Darwin Shaw during a scene on House of Cards and was "still thinking about it". But her worst onscreen smooch was with Robert Downey Jr.

"It didn't work, yeah. (We kissed) on Good Night, and Good Luck. But it was the character," she insisted.