Carlotta Carlson

Carlotta Carlson is the sister of Carl Carlson.

History
Every Valentine's Day, Lenny dates Carl's sister and Carl dates Lainie Leonard. They like how they can date someone with their best friend's face.

Lenny and Carl brought each other's sisters on a trip on the Something's Fishy, which they co-owned with Homer. Lenny let Carlotta drive the boat. Carlotta then proposed to Lenny, which made him jump overboard, whilst telling her that it wasn't a "no".