What to wear on a hill walk date?

I’m meeting a guy for a date that will involve A LOT of city walking and even up a hill at the end of the day. I’m now getting a bit worried as I don’t know what to wear. I obviously want to look nice, but I’m a bigger girl (UK size 14) so I’m not confident enough to wear tight fitting workout clothes or crop tops etc. does anyone have any ideas that have a bit of style, coverage, but also practical?
What to wear on a hill walk date?
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