A hippy outfit and wig gave us a blast from the past when Cher sang this medley.

All I Really Want To Do
Half Breed
Gypsies, Tramps, And Thieves
Dark Lady

Then back to the big screen and we see
Cher singing Friends, You Got to have Friends with Lily Tomlin...
flashes from the Sonny and Cher Show show
Carol Burnett
Janet Jackson
The Jackson Five
Tina Turner
Liberace
The Muffets
Elton John
David Bowie
Lily Tomlin
Burt Reynolds
Lily Tomlin
Guy from Taxi [Andy ???]
Jerry Lewis
George Burns
Tim Conway
Steve Martin
Rachel Welch
Lucille Ball
Phyllis Diller
Lily Tomlin
...and others.