Ryan Reynolds, Drew Barrymore, Gerard Butler and Megan Fox have been booked to host the first four episodes of the new season of "Saturday Night Live."

 

On the musical front, U2, Lady Gaga, Regina Spektor and Shakira have all agreed to perform during the first month of the NBC latenight show's 35th season. NBC will confirm the bookings this morning.

 

"SNL" cast members will be superbusy this fall, performing four weeks of episodes with no breaks between the Sept. 26 premiere and Oct. 17. There'll also be "SNL"-branded "Weekend Update" half-hours in primetime during the same period.

 

As widely reported, "SNL's" new season will begin Sept. 26 with Fox and U2. Fox is hyping "Jennifer's Body."

 

Reynolds and Lady Gaga are set for Oct. 3. It'll be Gaga's first "SNL" visit.

 

Barrymore returns for her sixth hosting stint on Oct. 10 (she was seven when she debuted on the show in November 1982). Spektor will be the musical guest.

 

And Butler, promoting his new movie "Law Abiding Citizen," debuts as an "SNL" host Oct. 17. Pop seductress Shakira will be his musical guest.

 

Lorne Michaels remains as exec producer of "SNL," while Seth Meyers is head writer.