Sun bonneted Betty Boop takes a train to "Rudy Valley" where she gains weight and Rudy Vallee performs the title song with Bouncing Ball.
| Actor | Role |
|---|---|
 Rudy ValleeSinger with Handlebar Moustache | Singer with Handlebar Moustache |
 Ann LittleKitty | Kitty |
 Mae QuestelBetty Boop (voice) (uncredited) | Betty Boop (voice) (uncredited) |