In S1E8, Rory and Lane are talking in the lobby of the Inn. Lorelai walks up and says, “Hey babe,” to Rory, then “Sgt. Pepper,” to Lane.
“Sgt. Pepper’s Lonely Hearts Club Band” was the Beatles’ 8th studio album, released in 1967. The Beatles created this iconic alter ego to explore broader musical styles. The fictional Sgt. Pepper’s Lonely Hearts Club Band is based on the idea of a military band. Most marching band uniforms, including Lane’s, are based on military band uniforms.