Justin Timberlake: 'Tonight Show with Jay Leno' Appearance!

Justin Timberlake flashes a smile while making an appearance on The Tonight Show with Jay Leno on Tuesday night (September 18) in Burbank, Calif.

The 31-year-old entertainer talked about working in Puerto Rico, his fiancee Jessica Biel, playing golf, and promoted his new film Trouble With the Curve.

PHOTOS: Check out the latest pics of Justin Timberlake

“Amy is an elite actress,” Justin wrote about his co-star Amy Adams on his Twitter account. “Amazingly prepared, tireless work ethic and a joy to be around off camera. Unreal!”

FYI: Justin is wearing Nudie Jeans Khakis.

Click inside to watch part two and three of Justin‘s interview…