Would you tell her?

I am a firm believer in women being able to wear whatever floats their boat, we are judged so harshly by so many that I just think you have to plough your own furrow and to hell with what anyone thinks. Certainly as we get older we should be able to do as we please when it comes to sartorial choices.

If she is wearing what makes her happy, then say nothing. Your opinion is just that- an opinion.

I agree with the above posts. Ignore any comments. It’s up to her how she dresses and 70 isn’t that old.

I think the suggestion that you compliment her when she looks good is a helpful one. It's just embarrassing when someone looks like mutton dressed as lamb or as a charming colleague said 'carrion dressed as mutton'!

That is YOUR opinion..keep it to yourself .Its none of your business what she wears ,if she’s happy and confident in her choice of clothes don’t knock her confidence .
I,m 72 I wear dresses just above my knees,leather trousers,over the knee boots…my daughters friends call me her wee glam mammy .I,m not glam at all but I wear what I want and nobody else’s opinion will stop me

Not many women in their seventies will look good in mini skirts but if she feels happy wearing them then that's all that matters.

I would comment when she dresses appropriately and really compliment her, stay quiet when she looks grim!

I think make no comment at all. I would be very upset if someone said the same to me...not that I wear minis skirts. She is your friend. Ignore any comments you hear.
She may decide herself she doesnt suit them.