Cilla Black appearing with Paul and John on The Music Of Lennon & McCartney, which was filmed on 1st - 2nd November 1965 at Granada TV Centre in Manchester. Funny how Cilla’s dress changes colour in these photos?! I think the top photo may be colourised.
There’s an interview with Cilla Black somewhere (which I can’t locate currently) where Cilla said she had to walk down the steps here, miming to her song, and when she reaches the bottom, John says something unheard to her. She said he’d told her “I can see what you had for breakfast in that dress”, which if you’re unfamiliar with that northern English turn of phrase, it means I can see your knickers - or something ruder!