Trying to find an old Coke (Coca-Cola) commercial from the 1970's...help?

I am trying to find a Coke TV commercial from the 1970’s that played in the USA. It pictured this nerdy looking girl (wearing glasses) that wants to be a cheerleader. She drinks a Coke and is transformed and makes the squad.—-I know, I know life used to be that simple, eh?—

I’m not having a lot of luck….anyone have any ideas?

Thanks in advance everyone.