Who was the 1974 Burger King lady who sang Hold the pickles hold the lettuce?

The 1974 Burger King lady who famously sang "Hold the pickles, hold the lettuce" was a character portrayed by actress and singer, Mary Lou Retton. She featured in a commercial for Burger King, promoting the chain's customizable burgers. The catchy jingle became iconic and is often remembered as part of Burger King's advertising history. Retton's performance contributed to the brand's playful and engaging marketing approach during that era.