Hot in the city?

[CrazyLadyAtNumber31]

I'm off to London (from Ireland) on Friday to meet an old friend from the States who happens to be there for a short time. I am stupidly excited at the thought of DC3 free shopping time!!
However now I'm panicking about what to pack and wear on such a short trip (about 36 hours), given that my weather app says it's going to be 29 degrees in London on Friday and I'll only have carry on luggage. I seem to remember reading somewhere that flip-flops /open toed shoes are a no-no on the underground as your feet get so dirty??? I've had a little last minute panic shop and ordered these -
www.boden.co.uk/en-GB/Womens-Dresses/Day-Dresses/WH613-BLK/Womens-Black-Casual-Weekend-Dress.html
www.boden.co.uk/en-GB/Womens-Dresses/Day-Dresses/WH612/Womens-Casual-Jersey-Dress.html in navy
www.hush-uk.com/sale/dresses_skirts/maxi_t-shirt_dress_black.htm

Are these too casual, not casual enough, trying too hard?? And what the hell do I wear on my feet if I can't wear sandals?
I'm over-thinking this, aren't I??
I'm 41, 5'7", size 12, if it matters.

Why can't you wear sandals? Love all the dresses btw :)

Yes, you're overthinking it. It's London, wear what you want!

You're definitely over thinking it! I wouldn't go bare footed in London but sandals/flip flops are absolutely fine. It's a pretty casual city if you aren't going to work in an office so no need to "dress up". The dresses you've linked to are all fine. Have a great trip!

Agree with everyone else. Flip flops fine

I would wear sandals than flip flops but only because I once lost my flip flop in the 'gap' between the train and platform. Having to hop along a platform on my remaining flip flop to get a guard to fish it out - was not my finest moment!

Am a Londoner and agree with everyone else. People here dress in every sort of way - no need for any particular look. Just what you're comfortable in.

Like the dresses. Have the blue casual jersey one and wore it in Rome happily a few weeks ago in hot weather, so should be ideal. A good casual city dress in the plain colours.

No problem at all on sandals - I wear them lots in summer and feet not horrifically dirty at end of day!

Thank you all! That's exactly the sort of thing would happen to me re. the flipflops in the gap!

I don't think flip-slops are great on escalators either. But sandals are fine, although would go for something with a slight cushion/heel if you're doing lots of walking as the soles on summer shoes can be a bit thin for trekking city pavements.

Agree with all above.

I wouldn't wear flip flops because of escalators and tube gaps but I wear either birkenstocks every day or my nice new saltwater sandals (thanks MN) and feet are fine, dirt wise !

Agree with avoiding flip flops but have a wonderful trip

I wore birkenstocks last weekend and was fine but wouldn't wear flip flops.

Wear what you like, it's London, no one cares, that's the best thing about the place!