Who was the female co host of the tonight show who was a comedian in the 70's?

The female co-host of "The Tonight Show" during the 1970s was Joan Rivers. She was a pioneering comedian known for her sharp wit and groundbreaking presence in a male-dominated industry. Rivers frequently guest-hosted and had a significant influence on stand-up comedy, paving the way for future female comedians. Her partnership with Johnny Carson on the show is often remembered as a notable highlight of her career.