It was previously announced that Gwen Stefani and No Doubt will appear on an upcoming episode of "Gossip Girl", but now ET has some exciting new details about the band's television appearance.

On May 11 No Doubt will appear as the fictional band Snowed Out on the flashback episode that is intended to introduce the characters for the currently untitled spin-off, says the New York Post.

"We've done plenty of television performances, as ourselves doing our own songs, but 'Gossip Girl' was a new situation," No Doubt guitarist Tom Dumont tells the Post in an interview. "We're kind of like actors in the sense that we're doing something within a drama on television."

The flashback episode is set in 1983 and will follow Kelly Rutherford's character, Lily van der Woodsen as a young girl, (Lily Rodes - played by Brittany Snow). Don't miss the special "Gossip Girl" episode Monday May 11 at 9 p.m. on the CW.