Last month, we reported development on a comedy called Last Vegas.  The script was written by Dan Fogelman (Crazy, Stupid, Love.), and is essentially The Hangover with old people.  The story centers on four old friends who decide to throw a Las Vegas bachelor party for the only one of them who has remained single.  Michael Douglas is onboard to play the lifelong bachelor, and we had previously heard that Robert De Niro was in talks to join the cast.  CBS Films announced today that De Niro has closed his deal to play the party-averse Paddy Connelly, who reluctantly agrees to fly to Vegas at the request of his friends.  The character of a curmudgeonly older gentleman who isn’t fond of jokes or partying should be quite the stretch for De Niro.Jon Turtletaub (National Treasure) is set to direct, and we previously heard that Christopher Walken may be circling a role as well.  No confirmation of Walken’s involvement is included in the announcement, but we do have the first official logline.  Hit the jump to check out the press release.Here’s the press release, with the logline in bold:

LOS ANGELES – May 10, 2012 – CBS Films and Good Universe announced today that two-time Oscar®-winner Robert De Niro will star in the comedy LAST VEGAS alongside two-time Oscar®-winner Michael Douglas.

Directed by Jon Turteltaub (National Treasure, While You Were Sleeping) from a screenplay by Dan Fogelman (Crazy, Stupid, Love, Tangled),  LAST VEGAS is a comedy about four old friends who decide to throw a Las Vegas bachelor party for the only one of them who has remained single. De Niro will play the party-averse Paddy Connelly, who reluctantly agrees to fly to Vegas at the request of his friends. Douglas will play Billy Gerson, a lifelong bachelor, who has finally decided to take the plunge.

Good Universe, which launches its global sales operation in Cannes this month led by principal Joe Drake, is handling international sales.  The ensemble comedy is being produced by Laurence Mark (Julie & Julia, Dreamgirls) and Amy Baer.  Good Universe's Nathan Kahane and Nicole Brown will executive produce.  Matt Leonetti will co-produce.

Executive Vice President of Production Maria Faillace and Creative Executive Alex Ginno are overseeing the project for CBS Films.

Michael Douglas is represented by WME and Robert De Niro by CAA. Legal for Douglas is handled by Manatt, Phelps & Phillips, LLP and legal for De Niro is handled by Grubman, Indursky & Schindler.  Dan Freedman and Allison Mella Strina negotiated the deals for Good Universe.