Joined at the hip.

Mistype for “her” I’d say.

Or that Anne and Mark were both in turquoise evening wear, and the Queen wore pieces (of jewellery?) in a similar colour - though I can't really imagine Mark Phillips wearing that colour, even in 1974.

The accompanying photo showed the queen in plain turquoise and Princess Anne in a turquoise and white flowered dress.

What a disappointment - I had built up an image in my mind of Mark in turquoise flares and velvet jacket.

Sorry - he was just in a well-cut suit and discreet tie. Probably gold cufflinks and tie-pin, but they weren't visible.

And them all strutting round to a backing track of Saturday Night Fever.

Sorry Maggie, Saturday Night Fever wasn't until 1977. ?

They might have been dancing to Waterloo by Abba though.

As the Cambridge and Delhi Durbar Parure is emerald I can't see how the turquoise "matches" it!
?

... irrespective of how many people were squashed in the evening dress!