Justin Timberlake stars in the new comedy flick 'Bad Teacher,' and yesterday, he and his co-stars posed for pictures on the red carpet before heading in to watch the film. The 'Bad Teacher' premiere was held in New York City at the Ziegfeld Theater on June 20, and Timberlake and the rest of the movie's cast and crew had a ball laughing it up on the red carpet. The movie is centered around Cameron Diaz's character, Elizabeth Halsey, who is probably the worst junior high teacher of all time.

One of the most interesting things about these pictures from the 'Bad Teacher' screening is seeing Timberlake's interaction with Diaz, whom he used to date. The pair was together for more than three years, splitting up on amicable terms in 2006. Diaz and Timberlake looked like they were having a blast hanging out with each other on the red carpet, however, only one of them is single -- Timberlake recently split from longtime girlfriend Jessica Biel, and Cameron Diaz is currently dating Yankees third baseman Alex Rodriguez. Despite this, their chemistry is undeniable in these photos.

Check out these pictures from Justin Timberlake (and some of his co-stars) at the 'Bad Teacher' premiere, and be sure to check out the hilarious new movie, which hits theaters this Friday, June 24.