VIDEO: Gwen Stefani Talks Co-Writing Music with Blake Shelton & More on LATE NIGHT

On last night's LATE NIGHT, guest Gwen Stefani tells Seth that her boyfriend Blake Shelton is a happy, amazing person and she is his biggest fan. Later, the singer reveas she is co-writing "Go Ahead and Break My Heart" with Shelton and shares that she is thrilled to have Celine Dion as a mentor on the upcoming season of THE VOICE. Watch the clips below!

About LATE NIGHT WITH SETH MEYERS: Beloved "Saturday Night Live" personality - and the longest serving "anchor" on the show's wildly popular "Weekend Update" - Seth Meyers takes over as host of NBC's "Late Night," home to A-list celebrity guests, memorable comedy and the best in musical talent.

As the Emmy-winning head writer for SNL, Seth has established a reputation for his sharp wit and perfectly timed comedy and has gained fame for his spot-on impersonations, unique characters and hilarious spoofing of topical news. Seth takes his departure from SNL to his new post at "Late Night" as Jimmy Fallon moves to "The Tonight Show."

From Emmy-winning executive producer Lorne Michaels ("Late Night with Jimmy Fallon," "Saturday Night Live") comes the next generation of Late Night jabs, laughs and unforgettable moments on "Late Night with Seth Meyers." One-hour daily show.

Photo credit: Lloyd Bishop/NBC